A photo of Himalaya Mountains in Nepal after landslides caused by the 2015 Gorkha earthquake.

Imaging technique could help identify where landslides are likely

A photo of Himalaya Mountains in Nepal after landslides caused by the 2015 Gorkha earthquake.

The Himalaya Mountains in Nepal after landslides caused by the 2015 Gorkha earthquake. (Photo Credit: Gen Li)

Each year, landslides kill thousands of people around the world and cause catastrophic property damage. But scientists are still trying to better understand the circumstances that cause them. Doing so would go a long way toward helping people predict where landslides could occur and how severe they might be.

A study led by Seulgi Moon, a UCLA professor of Earth, planetary and space sciences, could be a significant step toward that goal.

Moon and Gen Li, a former UCLA postdoctoral scholar who’s now at Caltech, created a new method to understand how topographic stress — which occurs when tectonic plates beneath the Earth’s surface slide toward each other enough to change the landscape above —influence landslide events. Their research is published in Nature Geoscience.

The study is the first to combine information about natural processes that take place both on the surface of the Earth and at the tectonic level; previous research focused only on landslides caused by events like earthquakes and rain.

“We found that the magnitude of big landslides is affected by not only local conditions such as slope and precipitation but can be also affected by forces deep underground,” Moon said. “This implies that the interaction between what’s above and below the ground is important to better understanding surface processes of the Earth.”

For the study, the scientists developed a new adaptation of an existing technology called 3D topographic stress modeling in order to identify places deep below the Earth’s surface where rocks are weathered — meaning that they’re weakened by natural geological processes — or fractured. By identifying those spots, the model can determine which locations are most susceptible to landslides.

“Understanding earth science and geology will be critical to making mitigation plans for landslides,” Moon said.

Moon and Li conducted the research on the Longmen Mountains, on the Eastern Tibetan Plateau. Their approach uses high-resolution satellite images to detect the sizes and locations of landslides. Those satellite images are compared to the fracturing and weathering of rocks in the same locations, which Moon said can be predicted from the topography of the Earth’s surface.

Areas in which the underground bedrock is particularly weak or fractured may be vulnerable to a large landslide.

Moon’s technique, which uses high-resolution underground stress distribution data, enabled the scientists to locate fracturing that would otherwise not have been apparent because it’s so deep beneath the Earth’s surface — as much as 500 meters (or about 1600 feet) down. The high-resolution underground stress distribution data allows the researchers to distinguish areas below the ground that are damaged due to high stress.

The new technique also could be used to determine where highly sensitive construction projects — like storage facilities for nuclear energy or water — should (or shouldn’t) take place.

This article, written by Angela Estrada, originally appeared in the UCLA Newsroom

A photo of UCLA physical sciences Centennial Award winners.

UCLA Division of Physical Sciences’ Centennial Awards honor faculty, alumni

A photo of UCLA physical sciences Centennial Award winners.

UCLA
Clockwise from top left: Stuart Brown, professor of physics and astronomy; Mahtash Esfandiari, professor of statistics; Tommaso Treu, professor of physics and astronomy; Robin Garrell, former vice provost for graduate education and professor of chemistry and biochemistry; Vassilis Angelopoulos, professor of Earth, planetary and space sciences; and Will Conley, professor of mathematics (Photo Credit: UCLA)

The UCLA Division of Physical Sciences will honor scientific excellence and commitment to education during the inaugural Centennial Awards celebration on May 26. The online event, which will feature a special welcome from Chancellor Gene Block and UCLA alumnus and actor Kal Penn, will honor faculty and alumni who have made significant contributions to their fields and the UCLA community.

“Through world-class research, leadership, mentorship and teaching, these awardees have demonstrated the level of excellence and service that UCLA is known for,” said Miguel García-Garibay, dean of the physical sciences division. “Every day they better the world around them, from students to faculty colleagues to the commercial sector and public at large. We are proud to celebrate them as part of the physical sciences family.”

Below are this year’s faculty awardees, who were nominated by their department.

Excellence in Education Award, which recognizes a faculty member who makes a broad impact on classroom inclusivity and demonstrated learning excellence:

  • Will Conley, professor of mathematics. Conley was recognized for his outstanding work teaching and promoting equity in the mathematics department’s introductory calculus sequence. His primary research interests are representation theory and algebraic number theory.
  • Mahtash Esfandiari, professor of statistics. Esfandiari is the director of the Statistical Consulting Center and the assistant director of the Center for the Teaching of Statistics. Her areas of interest include statistics education and statistical consulting.

Leadership Award, which acknowledges a member of the physical sciences division who has made extraordinary contributions through their service to UCLA or the national and/or international academic communities:

  • Robin Garrell, former vice provost for graduate education and professor of chemistry and biochemistry at UCLA. Garrell is now president of the graduate center at the City University of New York. Her research interests span vibrational spectroscopy and surface chemistry.

Mentorship Award, which recognizes a faculty member who has demonstrated a commitment to and success in mentoring research students from diverse backgrounds:

  • Vassilis Angelopoulos, professor of Earth, planetary and space sciences. As principal investigator of NASA’s THEMIS and ARTEMIS missions, Angelopoulos has led the development of five satellites and 20 ground-based observatories. He has also overseen the launch and operation of the first satellites built entirely at UCLA.
  • Stuart Brown, professor of physics and astronomy. Brown is a condensed matter experimentalist whose research focus is mostly on the phases and properties of correlated electron systems.

Outstanding Discovery Award, which honors physical sciences faculty who are leading their research fields with contributions from the most creative, productive and talented students, postdoctoral research fellows and researchers:

  • Tommaso Treu, professor of physics and astronomy. Treu is a member of the Hubble Telescope observing team. He is interested in understanding what the universe is made of, in particular the nature of dark matter and dark energy, and in understanding how galaxies and supermassive black holes form and evolve.

The Centennial Luminary Awards are presented to alumni in recognition of their contributions to UCLA and a career that exemplifies the values of research and education. The award recipients are:

– Leopold Andreoli, who received his doctorate in atmospheric sciences in 1980, will receive the Atmospheric and Oceanic Sciences Luminary Award. Andreoli is a former Air Force colonel who led the development of critical intelligence technology.

– Amy Braverman, who received her master’s in mathematics in 1992 and her doctorate in statistics in 1999, will receive the Statistics Luminary Award. Braverman is principal statistician at the Jet Propulsion Laboratory in Pasadena. Her work focuses on the use of remote sensing data.

– Kirk Dunn, who received his bachelor’s in mathematics in 1983, will receive the Mathematics Luminary Award. Dunn is the chief operating office at Cloudera, where he uses his technology engineering, marketing, sales and management experience to oversee business operations.

– Myung Ki Hong, who received his bachelor’s in chemistry in 1959, will receive the Chemistry & Biochemistry Luminary Award. Known for his expertise in resin and coatings, Hong founded Dura Coat Products in 1986.

– Nathan Myhrvold, who received his bachelor’s in mathematics and his master’s in geophysics and space physics in 1979, will receive the Earth, Planetary and Space Sciences Luminary Award. Myhrvold is a prominent scientist, technologist, inventor, author and food photographer.

– Howard Preston, who received his bachelor’s in physics in 1965 and his doctorate in physics in 1974, will receive the Physics and Astronomy Luminary Award. Preston is president of Preston Cinema Systems, a motion picture camera equipment company based in Santa Monica.

– Benedict Schwegler, who received his doctorate in environmental science and engineering in 1999, will receive the Environment and Sustainability Luminary Award. Schwegler is currently chief scientist at Engie China Research Lab and an adjunct professor at Stanford University.

In addition, the Centennial Visionary Award will be presented to Mani Bhaumik, whose time as a postdoctoral researcher at UCLA led him to become one of the physical sciences division’s strongest supporters.

Visit the UCLA Division of Physical Sciences website for more information.

This article, written by Max Gordy, originally appeared in the UCLA Newsroom

New digital exhibit explores Jewish history in Boyle Heights

A photo of Baist’s Real Estate Surveys’ map of Los Angeles in 1921.

Baist’s Real Estate Surveys’ map of Los Angeles in 1921. (Photo Credit: Los Angeles Public Library)

In the 1930s, the Los Angeles neighborhood of Boyle Heights had the highest concentration of Jewish people west of the Mississippi. There were approximately 10,000 Jewish households in the area, which was about a third of Los Angeles’ Jewish population. But Boyle Heights was also one of the most diverse neighborhoods — home to many Mexican, Japanese, Armenian/Turkish, Italian, Russian and African American families.

The Jewish Histories in Multiethnic Boyle Heights exhibit gathers archival materials, artifacts and personal stories to explore the rich history of the Jewish community in this neighborhood, while also observing how those experiences coincided with the other diasporic communities that lived there.

“The history of this neighborhood really lives on in people’s hearts and minds … and basements,” said Caroline Luce, chief curator and associate director of the UCLA Alan D. Leve Center for Jewish Studies.

The Boyle Heights exhibit is part of the Mapping Jewish L.A. project, a decadelong partnership between the Leve Center, UCLA Library and Special Collections, University of Southern California and other community archives. Through digital tools and multimedia technologies, the project enables a broader understanding of the complex histories of the Jewish community in Los Angeles.

“Like all of our projects at Mapping Jewish L.A., this exhibit aims to open a new public space for the discussion and discovery of L.A.’s kaleidoscopic history,” Luce said. “It serves as a new mode of remembrance, one that is collaborative and inclusive, that nurtures intergenerational and interethnic understanding, and that strengthens the ties between UCLA and the local community.”

Below is a preview of what you will find in the extensive digital exhibit, which covers many aspects of Jewish life in Boyle Heights, from education to cars and community centers.

This is a photo of Mollie Silverman (left) and friends in front of automobile on Malabar Street, ca. 1918.

Mollie Silverman (left) and friends in front of an automobile on Malabar Street in Boyle Heights, ca. 1918. (Photo Credit: Shades of L.A. Collection, Los Angeles Public Library)

The first automobile to ever drive through Los Angeles did so through the streets of Boyle Heights on May 30, 1897. J. Philip Erie, a New York civil engineer, spent $30,000 to design, invent and build the first gasoline-propelled automobile carriage west of the Mississippi River. The drive started in downtown Los Angeles and ended at Erie’s home near Hollenbeck Park.

By the 1930s and ’40s, cars were necessary to access jobs that were located beyond the downtown industrial zone. After World War II, as freeway construction in and around the neighborhood began, Mexican Americans, Japanese Americans and Jews formed social clubs revolving around the automobile. These clubs would sponsor food and toy drives, car washes and community events in their neighborhood.

Read more about the history of automobiles in Boyle Heights.

This is a photo of students of the Jewish People’s Fraternal Order Yiddish school performing their annual Purim play at the Cooperative Center in 1938.

Students of the Jewish People’s Fraternal Order Yiddish school perform their annual Purim play at the Cooperative Center in 1938. (Photo Credit: Shades of L.A. Collection, Los Angeles Public Library)

In the early 1920s, members of the Arbeter Ring (Workers Circle), a proletarian fraternal organization, and Jewish activists affiliated with the Cooperative Consumers League, a left-leaning cooperative buying club, created a place where Boyle Heights’ multiethnic residents could socialize, learn and organize. They called it the Cooperative Center, a large, three-story building near the corner of Brooklyn Avenue and Mott Street. There were several meeting rooms on the top floor; a large ballroom for lectures, rallies and social events in the middle; and a bakery and café on the ground floor. The building operated on a cooperative basis: Shareholder members voted democratically on administrative decisions, and union labor was employed throughout the building.

The Cooperative Center became a hub for neighborhood-based organizations and an important site of political organizing and social activities. The center hosted lectures by Upton Sinclair; organized meetings for the carpenters, furniture makers and bakers unions; and held social activities that blended consciousness raising, interethnic mingling and fundraising. Several unions and cultural organizations rented space there, as did the local branches of the International Workers Order, a left-leaning fraternal organization that offered low-cost insurance to its members regardless of race, religion or creed.

Read more about the history of the Cooperative Center.

This is a photo of a car in front of a house and appeared in “Who’s Who in sponsoring the Mount Sinai Hospital and Clinic, Annual Directory 1945.”

This photo appeared in “Who’s Who in sponsoring the Mount Sinai Hospital and Clinic, Annual Directory 1945.” (Photo Credit: Associated Organizations of Los Angeles)

The origins of Mt. Sinai Hospital — part of today’s Cedars-Sinai Medical Center — can be traced to the 1918 pandemic, when a group of Jewish Angelenos provided kindness and comfort to the sick. The effort reflected the Jewish value of bikur cholim (“visiting the sick”) — a traditional halakhic (Jewish religious law) principle that deems alleviating the suffering of the ill and offering prayers on their behalf to be an important mitzvah (commandment or good deed). In 1920, the group established the Bikur Cholim Society and purchased a small home in Boyle Heights to provide round-the-clock care for the neighborhood’s “incurables.”

By the end of the decade, the Bikur Cholim Society moved into a large building on Bonnie Beach Place. Known as the Mt. Sinai Home for Chronic Invalids, the facility, which featured a kosher kitchen and small prayer room, provided a space for observant Jewish patients to receive care.

Read more about the history of Mt. Sinai Hospital.

A photo of the Japanese Hospital, located at First and Fickett streets in Boyle Heights, in 1929.

The Japanese Hospital, located at First and Fickett streets in Boyle Heights, in 1929. (Photo Credit: Japanese American National Museum)

Similar to the community spirit of Mt. Sinai Hospital, the former Japanese Hospital, located at First and Fickett streets in Boyle Heights, reflects how Japanese Americans took care of others in their community. In the early 1900s, public health officials often associated disease with recent immigrants and certain ethnic groups, and they used race to determine how to administer public health programs. As a result, Japanese immigrants, who were viewed as the least able to assimilate compared to other immigrant groups, didn’t have access to mainstream health care.

To meet the needs of their community, Japanese medical professionals established the Turner Street Hospital in Little Tokyo in 1913. But as the Japanese American community continued to grow, so did the need for more substantive medical care. Five immigrant Japanese doctors decided to build a larger hospital with state-of-the art surgical facilities, and the Japanese Hospital opened on Dec. 1, 1929.

“Both institutions are examples of how immigrant residents in Boyle Heights worked together to meet the basic needs of the most vulnerable, including health care, shelter and child care,” Luce said. “By highlighting these overlapping patterns of community organization, we hope the exhibit illuminates the intersecting histories of the many diasporas that converged in Boyle Heights.”

Read more about the history of the Japanese Hospital.

A photo of the original building at 420 N. Soto St., which housed the folkshul, ca. 1922.

The original building at 420 N. Soto St., which housed the folkshul, ca. 1922. (Photo Credit: Zunland, vol. 4 (1925))

In 1908, a group of Yiddish-speaking Jewish immigrants from Eastern Europe founded Los Angeles’ first Yiddish organization, the National-Radical Club. Among its primary goals was establishing a Yiddish school, so Jewish parents could supplement their children’s public school education. Advocates for the school included Dr. Leo Blass (née Lieb Isaac Shilmovich), whose devotion to Yiddish culture was legendary. Blass and members of the National-Radical Club began teaching classes at a private home near Michigan Avenue and Breed Street.

In 1920, Blass and the school board launched a fundraising drive to purchase a house at 420 N. Soto St., where the school would become a Yiddish cultural center and organizing space. The new center, known as the folkshul (“people’s school”), opened the following year with 120 students. In addition to being a Yiddish school, the folkshul quickly became a popular destination for organizations and events, hosting meetings of local Jewish unions, fundraisers and bazaars, and an annual Hasidism ball.

Read more about the history of the folkshul.

A photo of, from left: The Soto-Michigan JCC featured a playground where children could enjoy a jungle gym, swing sets and pingpong tables. Both photos were taken by Julius Shulman in 1938.

From left: The Soto-Michigan JCC featured a playground where children could enjoy a jungle gym, swing sets and pingpong tables. Both photos were taken by Julius Shulman in 1938. (Photo Credit: Julius Shulman Photography Archive, © J. Paul Getty Trust.)

About a half mile from the folkshul was the Soto-Michigan JCC, the Jewish Centers Association’s new community center in Boyle Heights. The center’s director, Rabbi J. M. Cohen, wanted to expand the center’s role in the neighborhood to “integrate the Jewish community with the general community and the individual with the Jewish community and society as a whole.” Cohen believed that by celebrating cultural pluralism, the center would strengthen the Jewish identities of American-born children, foster integration and serve all of the neighborhood’s residents, including children of Mexican, Asian, Russian and African American descent.

The Soto-Michigan JCC’s three-story facility featured a lounge, game room and clubroom on the first floor and locker rooms in the basement. But the facility’s most popular feature was the Stebbins playground, where there was a jungle gym, volleyball and basketball courts, swing sets and pingpong tables. As many as 1,000 people regularly visited the Soto-Michigan JCC just to use the playground, in addition to the 2,300 children and adults who used the meeting rooms and auditoriums every week.

Read more about the history of the Soto-Michigan JCC.


As a complement to the Jewish Histories in Multiethnic Boyle Heights digital exhibit, there’s also a physical exhibit currently on display at the Boyle Heights History Studios, featuring materials that can’t be viewed online.

In addition, Holocaust Museum L.A. will host a discussion about the digital exhibit with Luce on May 26 at 11 a.m. Register for the event.

Luce will also discuss the project with USC professor George Sanchez on June 9. Details to follow at levecenter.ucla.edu.

Migratory songbirds’ travels disrupted by earlier springs

A scarlet tanager perched on a tree branch. (Photo Credit: Jen Goellnitz/Flickr)

Spring has arrived in North America. Leaves have sprouted, flowers are in bloom and migratory birds are bringing color and song to large swaths of the continent.

The timing of this so-called spring green-up — the beginning of a new cycle of plant growth each year — affects migratory birds’ behaviors and ability to survive their move north. They tend to travel later if winter lasts a little long, and sooner if spring comes early.

In North America, climate change is causing spring to arrive an average of 0.4 days earlier each year. According to a new paper in Nature Ecology and Evolution, some species could be unable to keep pace with this rapid change.

Although a change of less than half a day per year might not sound like much, it adds up to an entire week’s worth of change every 20 years, and it could alter what food is available along their migration routes and breeding grounds, how much time fledglings have to leave the nest, and how the birds interact with other plant and animal species. Previous research has found that such changes could lead to population declines and cascading effects to ecosystems.

“Some birds are quite accurate on the coming of spring because they are highly sensitive to the rhythms and cycles of nature,” said Morgan Tingley, a UCLA ecologist and the paper’s senior author.

Tingley and his co-authors crowdsourced 7 million observations by birdwatchers from the online platform eBird and compared the data to the timing of spring green-up as seen from space via two NASA satellites from 2002 through 2017.

The researchers analyzed how 56 species of migratory birds, primarily small songbirds, responded to these earlier springs. All species travel to breeding grounds in North America but some winter farther south, in the Caribbean, Central America and South America. The authors found that species with shorter, slower migration routes that winter farther north adjusted to changes better — the pine warbler and eastern phoebe, for example. Others had more trouble keeping pace, particularly those that winter in South America and have longer migration routes — such as the bobolink and willow flycatcher.

Most were unable to entirely keep up with an earlier arrival of spring. For each day earlier that green-up occurred, species generally adjusted their migration schedules by less than a half-day.

That inability to adjust to an earlier spring can have serious consequences, said Casey Youngflesh, the study’s lead author and a UCLA ecology and evolutionary biology researcher.

“If birds show up days or weeks later than optimal, they may not have enough food, which could result in lower success breeding and fewer chicks that survive to leave the nest,” Youngflesh said. “That’s really the main concern — that it may cause overall declines in how many birds there actually are.”

The study also notes that the consequences for birds could indirectly affect other animals and even plants. For example, caterpillars are a primary source of food for migratory birds, but if bird populations were to decline, it is possible that more caterpillars than normal would survive each year. Were that to happen, the health of trees could be affected because leaves are a primary food source for caterpillars.

“Everything is interconnected. If you remove a piece of the ecosystem, it’s hard to say exactly what will happen,” Youngflesh said, adding that further research would be needed to determine exactly what the consequences of earlier green-ups would be for any individual species.

Changes in climate have always been a major factor in the evolution of birds’ migratory patterns. However, Youngflesh said, those adaptations have occurred over tens of thousands, or even hundreds of thousands, of years. Modern climate change, largely resulting from increased carbon dioxide emissions, is happening far faster, over years and decades — so rapidly that many species are unable to adapt quickly enough.

That’s thought to be one of the primary reasons bird populations have declined rapidly across North America in recent decades. A 2019 paper published in Science concluded that the number of birds on the continent has diminished by about 3 billion since 1970, when the total population was around 7 billion. In addition to climate change, other factors such as habitat loss, outdoor-dwelling cats and more windows — with which birds collide — are likely reasons for the decline.

The new study, whose co-authors included researchers from the University of Florida, University of North Carolina and Pennsylvania State University and others, outlines a framework for further research into why and how the decline is happening, and it could help conservationists target their efforts to protect the species that are most at risk, Tingley said.

“Climate change is producing winners and losers,” Tingley said. “We are mapping for the first time why some are winning and others are losing.”

This article, written by David Colgan, originally appeared in the UCLA Newsroom.

A photo of the planet Venus.

How long is a day on Venus? Scientists crack mysteries of our closest neighbor

A photo of the planet Venus.

Fundamentals such as how many hours are in a Venusian day provide critical data for understanding the divergent histories of Venus and Earth, UCLA researchers say. (Photo Credit: NASA/JPL-Caltech)

Venus is an enigma. It’s the planet next door and yet reveals little about itself. An opaque blanket of clouds smothers a harsh landscape pelted by acid rain and baked at temperatures that can liquify lead.

Now, new observations from the safety of Earth are lifting the veil on some of Venus’ most basic properties. By repeatedly bouncing radar off the planet’s surface over the last 15 years, a UCLA-led team has pinned down the precise length of a day on Venus, the tilt of its axis and the size of its core. The findings are published today in the journal Nature Astronomy.

“Venus is our sister planet, and yet these fundamental properties have remained unknown,” said Jean-Luc Margot, a UCLA professor of Earth, planetary and space sciences who led the research.

Earth and Venus have a lot in common: Both rocky planets have nearly the same size, mass and density. And yet they evolved along wildly different paths. Fundamentals such as how many hours are in a Venusian day provide critical data for understanding the divergent histories of these neighboring worlds.

Changes in Venus’ spin and orientation reveal how mass is spread out within. Knowledge of its internal structure, in turn, fuels insight into the planet’s formation, its volcanic history and how time has altered the surface. Plus, without precise data on how the planet moves, any future landing attempts could be off by as much as 30 kilometers.

“Without these measurements,” said Margot, “we’re essentially flying blind.”

The new radar measurements show that an average day on Venus lasts 243.0226 Earth days — roughly two-thirds of an Earth year. What’s more, the rotation rate of Venus is always changing: A value measured at one time will be a bit larger or smaller than a previous value. The team estimated the length of a day from each of the individual measurements, and they observed differences of at least 20 minutes.

“That probably explains why previous estimates didn’t agree with one another,” Margot said.

Venus’ heavy atmosphere is likely to blame for the variation. As it sloshes around the planet, it exchanges a lot of momentum with the solid ground, speeding up and slowing down its rotation. This happens on Earth too, but the exchange adds or subtracts just one millisecond from each day. The effect is much more dramatic on Venus because the atmosphere is roughly 93 times as massive as Earth’s, and so it has a lot more momentum to trade.

The UCLA-led team also reports that Venus tips to one side by precisely 2.6392 degrees (Earth is tilted by about 23 degrees), an improvement on the precision of previous estimates by a factor of 10. The repeated radar measurements further revealed the glacial rate at which the orientation of Venus’ spin axis changes, much like a spinning child’s top. On Earth, this “precession” takes about 26,000 years to cycle around once. Venus needs a little longer: about 29,000 years.

With these exacting measurements of how Venus spins, the team calculated that the planet’s core is about 3,500 kilometers across — quite similar to Earth — though they cannot yet deduce whether it’s liquid or solid.

Venus as a giant disco ball

On 21 separate occasions from 2006 to 2020, Margot and his colleagues aimed radio waves at Venus from the 70-meter–wide Goldstone antenna in California’s Mojave Desert. Several minutes later, those radio waves bounced off Venus and came back to Earth. The radio echo was picked up at Goldstone and at the Green Bank Observatory in West Virginia.

“We use Venus as a giant disco ball,” said Margot, with the radio dish acting like a flashlight and the planet’s landscape like millions of tiny reflectors. “We illuminate it with an extremely powerful flashlight — about 100,000 times brighter than your typical flashlight. And if we track the reflections from the disco ball, we can infer properties about the spin [state].”

Muhammad Nadeem, Jean-Luc Margot/UCLA and NASA

The complex reflections erratically brighten and dim the return signal, which sweeps across Earth. The Goldstone antenna sees the echo first, then Green Bank sees it roughly 20 seconds later. The exact delay between receipt at the two facilities provides a snapshot of how quickly Venus is spinning, while the particular window of time in which the echoes are most similar reveals the planet’s tilt.

The observations required exquisite timing to ensure that Venus and Earth were properly positioned. And both observatories had to be working perfectly — which wasn’t always the case. “We found that it’s actually challenging to get everything to work just right in a 30-second period,” Margot said. “Most of the time, we get some data. But it’s unusual that we get all the data that we’re hoping to get.”

Despite the challenges, the team is forging ahead and has turned its sights on Jupiter’s moons Europa and Ganymede. Many researchers strongly suspect that Europa, in particular, hides a liquid water ocean beneath a thick shell of ice. Ground-based radar measurements could fortify the case for an ocean and reveal the thickness of the ice shell.

And the team will continue bouncing radar off of Venus. With each radio echo, the veil over Venus lifts a little bit more, bringing our sister planet into ever sharper view.

This research was supported by NASA, the Jet Propulsion Laboratory and the National Science Foundation.

Other researchers who contributed to the study are Donald Campbell of Cornell University; Jon Giorgini, Joseph Jao and Lawrence Snedeker of the Jet Propulsion Laboratory; and Frank Ghigo and Amber Bonsall of the National Radio Astronomy Observatory in West Virginia.

This article, written by Christopher Crockett, originally appeared in the UCLA Newsroom.

A photo of the UCLA 2021 AAAS members.

Five UCLA College professors elected to American Academy of Arts and Sciences

A photo of the UCLA 2021 AAAS members.

UCLA 2021 AAAS members
Top row: UCLA professors Terence Blanchard, Kimberlé Crenshaw, Barbara Geddes and Elisabeth Le Guin.
Bottom row: UCLA professors Kelly Lytle Hernández, Daniel Posner, Marilyn Raphael and Victoria Sork. (Photos Courtesy of UCLA)

Eight faculty members, five of whom are from the UCLA College were elected today to the American Academy of Arts and Sciences, one of the nation’s most prestigious honorary societies. A total of 252 artists, scholars, scientists and leaders in the public, nonprofit and private sectors were elected to the academy today, including honorary members from 17 countries.

UCLA College’s 2021 honorees are:

Barbara Geddes, professor emeritus and former chair of political science, conducts research on the breakdown of authoritarian regimes, democratization, authoritarian transitions and political development, with a focus on Latin American politics. Geddes’ early work included studies of bureaucratic reform and corruption in Brazil and the politics of economic policy-making in Latin America. Early conclusions from her research about regime duration and modes of transition were published in “What Do We Know about Democratization after Twenty Years, Annual Review of Political Science 2” (1999). Geddes also published a book on comparative political research methods called “Paradigms and Sand Castles: Theory Building and Research Design in Comparative Politics” (2003).

Kelly Lytle Hernández, a professor of history and African American studies, is the director of UCLA’s Ralph J. Bunche Center for African American Studies. Lytle Hernández was awarded a 2020 MacArthur Fellowship from the John D. and Catherine T. MacArthur Foundation, which said her research on “the intersecting histories of race, mass incarceration, immigration, and cross-border politics is deepening our understanding of how imprisonment has been used as a mechanism for social control in the United States.” One of the nation’s leading experts on race, immigration and mass incarceration, she is the author of the award-winning books, “Migra! A History of the U.S. Border Patrol” (University of California Press, 2010), and “City of Inmates: Conquest, Rebellion, and the Rise of Human Caging in Los Angeles” (University of North Carolina Press, 2017). She holds UCLA’s Thomas E. Lifka Chair in History, and is the principal investigator for Million Dollar Hoods, a university-based, community-drive research project that maps the fiscal and human cost of mass incarceration in Los Angeles.

Daniel Posner, UCLA’s James S. Coleman Professor of International Development, focuses his political science research on ethnic politics, research design, distributive politics and the political economy of development in Africa. His most recent co-authored book, “Coethnicity: Diversity and the Dilemmas of Collective Action,” (Russell Sage, 2009) employs experimental games to probe the sources of poor public goods provision in ethnically diverse communities. His first book was “Institutions and Ethnic Politics in Africa.” (Cambridge, 2005). He is the co-founder of the Working Group in African Political Economy, a member of the Evidence in Governance and Politics network, a faculty associate of the Center for Effective Global Action and a research affiliate of the International Growth Center.

Marilyn Raphael, professor of geography and interim director of the UCLA Institute of the Environment and Sustainability, is the co-author of the award-winning book “The Encyclopedia of Weather and Climate Change: A Complete Visual Guide,” and the author or co-author of more than 60 peer-reviewed journal articles. Raphael was elected vice president of the American Association of Geographers, the world’s largest geography society effective July 1 of this year. Her research expertise includes atmospheric circulation dynamics, Antarctic sea ice variability and global climate change. She has been committed to introducing undergraduates to the world of climatology and graduate students to the joys of research.

Victoria Sork, is a distinguished professor of ecology and evolutionary biology and a renowned plant evolutionary biologist. Sork was award the 2020 Molecular Ecology Prize, which recognizes an outstanding scientist who has made significant contributions to the field. Elected in 2004 as a fellow of the American Association for the Advancement of Science, she has conducted pioneering research in the field of landscape genomics, which integrates genomics, evolutionary biology and conservation science. She is particularly concerned with the ecological and genetic processes that will determine whether California oaks will tolerate climate change. She and members of her laboratory conduct research throughout California and Western North America from Baja California through Alaska. Research she led in 2019 examines whether the trees being replanted in the wake of California’s fires will be able to survive a climate that is continuing to warm.

Other UCLA 2021 honorees are:

Terence Blanchard, a six-time Grammy-winning jazz trumpeter, composer and music educator, holds UCLA’s Kenny Burrell Chair in Jazz Studies in UCLA’s Herb Alpert School of Music. Blanchard has released 20 solo albums and composed more than 60 film scores. Blanchard served as artistic director of the Thelonious Monk Institute of Jazz (now named the Herbie Hancock Institute of Jazz) from 2000 to 2011. In this role, he presented masterclasses and worked with students in the areas of artistic development, arranging, composition and career counseling. Today, the institute partners with music school to offer the Herbie Hancock Institute of Jazz Performance at UCLA, a special college-level program that allows masters of jazz to pass on their expertise to the next generation of jazz musicians.

Elisabeth Le Guin, professor of musicology in the UCLA Herb Alpert School of Music, is a Baroque cellist, and was a founding member of Philharmonia Baroque Orchestra and the Artaria String Quartet. In recent years, Le Guin has become involved in the movimiento jaranero, a transnational grassroots musical activism in Mexico and Mexican immigrant communities in the United States. She has written two books, “Boccherini’s Body: an Essay in Carnal Musicology” (2006) and “The Tonadillo in Performance: Lyric Comedy in Enlightenment Spain” (2014), both published by UC Press. She received the American Musicological Society’s Alfred Einstein and Noah Greenberg Awards. She re-started UCLA´s Early Music Ensemble in 2009 after a 15-year hiatus.

Kimberlé Crenshaw, a distinguished professor of law in the UCLA School of Law, is an expert on race and the law, structural racism and discrimination based on race, gender and class. A renowned scholar on civil rights and constitutional law, Crenshaw was a founder and has been a leader in the intellectual movement called critical race theory. She is the executive director of the African American Policy Forum, an innovative think tank connecting academics, activists and policy-makers to dismantle structural inequality and engage new ideas and perspectives to transform public discourse and policy. Crenshaw coined the term “intersectionality” more than 30 years ago to describe how race, class, gender, and other individual characteristics “intersect” with one another and overlap.

“We are honoring the excellence of these individuals, celebrating what they have achieved so far and imagining what they will continue to accomplish,” said David Oxtoby, president of the academy. “The past year has been replete with evidence of how things can get worse; this is an opportunity to illuminate the importance of art, ideas, knowledge and leadership that can make a better world.”

The American Academy of Arts and Sciences was founded in 1780 by John Adams, John Hancock and others who believed the new republic should honor exceptionally accomplished individuals. Previous fellows have included George Washington, Benjamin Franklin, Alexander Hamilton, Ralph Waldo Emerson, Albert Einstein, Charles Darwin, Winston Churchill, Martin Luther King Jr., Nelson Mandela and UCLA astrophysicist Andrea Ghez.

It also is an independent policy research center that undertakes studies of complex and emerging problems. Current academy members represent today’s innovative thinkers in many fields and professions, including more than 250 Nobel and Pulitzer Prize winners.

This article, written by Stuart Wolpert, originally appeared in the UCLA Newsroom.

A photo of a scene from Netflix action-thriller “The Old Guard.”

2021 Hollywood Diversity Report: Audiences showed up for diverse films in theaters, online

A photo of a scene from Netflix action-thriller “The Old Guard.”

Netflix action-thriller “The Old Guard,” directed by UCLA alumna Gina Prince-Bythewood, featured a cast that was 50% minority. The series landed in the top 10 streaming charts for all racial groups — No. 6 for Asian and Latino households, No. 5 for Black households and No. 9 for white households. (Photo Credit: Aimee Spinks)

– Of the top 185 films of 2020, more than half were released via streaming platforms only.

– Of the films that had a theatrical release, minority audiences accounted for the bulk of ticket purchases.

– Films with casts that were at least 21% minority enjoyed the highest online viewing ratings among all racial groups in the all-important 18–49 age category.

– Women and people of color gained ground in all job categories tracked by the report: lead actors, total cast, writers and directors.

– People of color and women are still underrepresented as film writers and directors and typically helmed lower-budget films.


Every industry felt the weight of the pandemic in 2020, and Hollywood was no exception. Business shutdowns and physical distancing efforts around the world wreaked havoc on box-office revenue and upended long-held film release strategies.

Like everyone, Hollywood studios had to get creative in 2020. UCLA’s latest Hollywood Diversity Report, published today by the UCLA College Division of Social Sciences, shows that 54.6% of the top films of 2020 were released solely via streaming subscription services, a major departure from business as usual.

More than half of U.S. adults reported that their viewing of film and series content via online subscription services increased during 2020, according to the Motion Picture Association’s latest findings referenced in the report. The global home and mobile entertainment market increased to a record $68 billion over the course of 2020, up 23% from the $55.9 billion in 2019. The U.S. share of this global market stood at nearly 44% in 2020. Latino and Black adults, in particular, consumed online content at higher levels than other groups.

The film installment of this year’s Hollywood Diversity Report tracks the top 185 films of 2020, breaking down performance by box-office revenue for theatrical releases and, new for this year, Nielsen ratings for streaming films.

Many of the big blockbuster films planned for 2020 had their release dates pushed to 2021 and beyond. For films that had a theatrical run in 2020, minorities were major drivers of box-office ticket sales, as with previous years. For six of the top 10 theatrically released films, minorities accounted for the majority of domestic ticket sales during opening weekend. For the seventh top film, minorities accounted for half the ticket sales.

The Hollywood Diversity Report also tracks how well women and minorities are represented in four key industry employment categories: lead actors, total cast, writers and directors.

All four job categories showed progress in 2020, but women and people of color are still underrepresented in critical behind-the-camera jobs. Women made up just 26% of film writers and just 20.5% of directors. Combined, minority groups were slightly better represented as directors at 25.4%. Just 25.9% of film writers in 2020 were people of color.

“We’ve been systematically looking at these key job categories and comparing the representation of women and people of color to the all-important bottom line for eight years, and it’s encouraging to see skyrocketing numbers this year in front of the camera,” said Darnell Hunt, dean of the UCLA College Division of Social Sciences and the report’s co-author. “This was a very interesting year to track the nimbleness of industry efforts to deliver content to audiences, who grow increasingly racially diverse each year and who it’s clear were eager to enjoy films in new ways, despite disruptions caused by the pandemic.”

UCLA’s Hollywood Diversity Report is the only study of its kind to incorporate analysis of how top films perform among different racial groups, comparing the diversity of casts, directors and writers with the diversity of American audiences.

For streaming platforms, films featuring casts that were 21% to 30% minority had the highest ratings among white, Black, Latino and Asian households and viewers 18–49.

Among the top 10 streaming films ranked by Asian and Black households, seven had casts that were more than 30% minority. Among the top 10 films ranked by Latino and white households, six had casts that were more than 30% minority.

UCLA’s report shows great progress in actor categories over its decade of data. In 2011, the first year tracked, more than half of the films fell into the lowest level of cast diversity — less than 11%. In 2020, however, 28.8% of films had the highest level of cast diversity — 50% or higher. Just under 10% of films in 2020 fell into the lowest level of cast diversity.

For the first time since the report launched in 2014, people of color were represented in the lead actor and total cast categories at levels proportionate to their presence in the American populace — 39.7% and 42%, respectively. People of color make up 40.3% of the U.S. population.

The analysis of 2020 films also looked at the correlation between directors’ and casts’ racial and gender diversity.

In 2020, nearly all of the films with a female director also featured a female lead (94.7%). Films directed by minorities had the highest level of cast diversity. And 78.3% of films directed by people of color featured minority leads.

However, the report notes, there are still relatively few examples of women and people of color running the show on big-budget films, those marketed to the broadest audience.

“Our report finds that women directors and directors of color have overwhelmingly diverse productions,” said Ana-Christina Ramon, the report’s co-author and the director of research and civic engagement for the division of social sciences. “However, these films often have smaller budgets than those helmed by male directors and white directors. So, in a year where more diverse productions were made more accessible to larger audiences through streaming services, the contrast is stark as to what types of films have the big budgets. There is a clear underinvestment of films made by, written by, and led by women and people of color.”

White film directors were more than twice as likely as minority directors to helm a film with a budget of $100 million or more — 6.4% versus 2.8%. Men and women were equally likely to direct a big-budget film in 2020 — 5.7% and 5.6%, respectively.

Women and people of color were more likely to direct films that fell into the lowest budget category of less than $20 million. For films directed by people of color, 72.3% had budgets less than $20 million, compared to 60% for white directors. It was about the same for films directed by women. Of those, 74.3% had budgets that were less than $20 million, compared to 59.2% for directors who were men.

Along those same lines, films with minority leads and writers of color also trended toward lower budgets, the report found.

Among other findings in the report:

– Women made up 47.8% of lead actors and 41.3% of overall casts in the top films of 2020. Women make up about half the U.S. population.

– Among white, Black and Middle Eastern or Northern African actors, women were significantly underrepresented in the top films of 2020, compared to men from those groups.

– Among Latino, Asian, multiracial and Native actors, women either approached parity with their male counterparts or exceeded it in films of 2020.

– The most underrepresented groups in all job categories, relative to their presence in the U.S., are Latino, Asian and Native actors, directors and writers.

The current report includes 10 years of data, making UCLA’s Hollywood Diversity Report the longest-running, consistent analysis of gender and racial diversity in the film industry. TV industry data, part two of the now biannual report, will be released in September 2021.

This article, written by Jessica Wolf, originally appeared in the UCLA Newsroom.

Psychology professor working to eliminate health disparities

A photo of Vickie Mays

“We are all connected. The extent to which we allow members of our society to be unequal is the extent to which we endanger the health of all,” says Vickie Mays, professor of psychology in the UCLA College whose work focuses on understanding the physical and mental health challenges of underserved populations.

A vital part of the UCLA faculty since 1979, Mays is a highly regarded thinker, scholar and leader. She is director of the UCLA Center on Bridging Research, Innovation, Training and Education (BRITE) for Minority Health Disparities Solutions, an NIH-funded center with approximately 80 faculty, staff, students and community partners working to eliminate physical and mental health disparities in racial/ethnic minority populations. Last year, Chancellor Block appointed Mays as Special Advisor to the Chancellor on Black Life.

Mays, who holds a joint appointment in health policy and management in the Fielding School of Public Health, has worked with members of Congress on a bill that would require better data on the race and ethnicity of people affected by the COVID-19 pandemic. She also is conducting research on the data needed to create better models to predict the spread of COVID-19, in order to reduce the number of infections and deaths in Black communities.

Mays is co-senior author of a new UCLA-led study that found that Black men of all income levels reported experiencing higher levels of discrimination than their white counterparts. Published March 8 in the International Journal of Environmental Research and Public Health, the study may help explain why increased income levels among Black men aren’t accompanied by improved physical and mental health outcomes, as they are for whites.

This article was written by Margaret MacDonald.

A photo of a Black man in suit and tie.

UCLA-led study reveals ‘hidden costs’ of being Black in the U.S.

A photo of a Black man in suit and tie.

The study’s findings may help explain why increased income levels among Black men aren’t accompanied by improved physical and mental health outcomes, as they are for whites, researchers say. (Photo Credit: iStock.com/FlamingoImages)

A woman grips her purse tightly as you approach. A store manager follows you because you look “suspicious.” You enter a high-end restaurant, and the staff assume you’re applying for a job. You’re called on in work meetings only when they’re talking about diversity.

The indignities and humiliations Black men — even those who have “made it” — regularly endure have long been seen as part and parcel of life in the United States among the Black community, a sort of “Black tax” that takes a heavy toll on physical and mental health.

Now, a new UCLA-led study reveals these “hidden costs” of being Black in America. Researchers who analyzed a national sample of the views of Black men and white men found that Black men of all income levels reported experiencing higher levels of discrimination than their white counterparts.

“Black men face constant experiences of discrimination and disappointment when they try to contribute. They are treated like criminals in a society where they often are not allowed to achieve their full potential,” said the study’s co-senior author, Vickie Mays, a professor of psychology in the UCLA College and of health policy and management at UCLA’s Fielding School of Public Health.

“Successful Black men,” she said, “hope their hard work will pay off and instead are tormented to find their education and income often do not protect them from racial discrimination. The ‘return on achievement’ is reduced for Blacks in the U.S. It’s a disturbing wake-up call.”

The study, “Money protects white but not African American men against discrimination,” is published today in the peer-reviewed open-access International Journal of Environmental Research and Public Health.

To measure perceived discrimination, the researchers analyzed data from the National Survey of American Life that assessed the mental health of 1,271 Black and 372 non-Hispanic white adults who live in the same areas across the U.S. Survey questions inquired about chronic, daily experiences over the past year. For example, respondents were asked how often in their day-to-day lives any of the following had occurred: “being followed around in stores,” “people acting as if they think you are dishonest,” “receiving poorer service than other people at restaurants” and “being called names or insulted.” Scaled response options ranged from 1 (“never”) to 6 (“almost every day”).

The results indicate that many Black men face discriminatory indignities on a nearly daily basis, year after year — and the experience is exhausting, said Mays, who directs the National Institutes of Health–funded UCLA BRITE Center for Science, Research and Policy and is a special advisor to UCLA’s chancellor on Black life. “It takes a toll on your physical and mental health. You get depleted.”

The daily discrimination measured by the survey did not include other frequently cited injustices, such as being pulled over and questioned by police officers without cause and facing discrimination in housing, education, jobs and health care, said Mays. She noted that while the study’s results were distressing, they were not particularly surprising.

“We’ve known this,” she said, “but now it’s documented. This is evidence.”

Higher incomes and achievement offer Black men little relief

While the study found that for white men, increases in household income were inversely associated with perceived discrimination, this did not hold true for Black men, who continued to report high levels of discrimination regardless of any boost in income level.

The findings may explain why Black men, even as they attain greater financial and educational success on average, don’t gain much protection against negative physical and mental health outcomes the way white men generally do, said co-senior author Susan Cochran, a professor of epidemiology at the Fielding School of Public Health.

“In the United States, many people believe that higher levels of income and education provide relief against being treated differently, badly or unfairly,” Cochran said. “The results of our study show that is truer for white men, but it’s clearly not the case for many Black men. Structural barriers limit the benefits of Black men’s economic achievements, and perceived discrimination increases the risk of adverse physical and mental health outcomes.”

For Black men, increases in income at all financial levels actually lead to more perceived discrimination, perhaps because they come into increased contact with whites, according to lead author Shervin Assari, who conducted the analysis as a researcher with the BRITE Center for Science, Research and Policy and is currently an associate professor of urban public health and family medicine at Charles R. Drew University of Medicine and Science.

“It was upsetting to write this study,” Assari said. “Successful Blacks expect better treatment and think they deserve it but often do not get it.”

Discrimination, the authors say, is embedded in the fabric of U.S. institutions and harms Black men in their daily lives. For Mays, the damage this does to equal opportunity brings to mind the 1951 Langston Hughes poem “Harlem,” in which the poet asks, “What happens to a dream deferred? / Does it dry up / like a raisin in the sun?”

“Change has to come faster,” Mays said. “Change has to be permanent. We are tired of hearing ‘wait your turn.’ Black men’s dreams have been deferred for far too long.”

The research was supported by the National Institute for Minority Health and Health Disparities and the National Institute of Mental Health.

This article, written by Stuart Wolpert, originally appeared in the UCLA Newsroom.

A photo of a worker wearing a face covering on a delivery truck.

$1.3 million grant will help UCLA advance workforce equity and empowerment

A photo of a worker wearing a face covering on a delivery truck.

The new initiative will seek ways to help build a more equitable economy after the COVID-19 pandemic. (Photo Credit: Pavel Danilyuk/Pexels)

The UCLA Labor Center has received a $1.3 million grant from the James Irvine Foundation to establish the California Workforce Development Worker Equity Initiative with the National Skills Coalition.

Leading the effort for UCLA are Betty Hung, project director at the UCLA Institute for Research on Labor and Employment, and Ana Luz Gonzalez-Vasquez, a project manager at the Labor Center. The National Skills Coalition is a Washington, D.C.-based nonprofit that advocates for policies and skills training to benefit workers and businesses.

The Worker Equity Initiative will collaborate with the state of California’s Labor and Workforce Development Agency to explore how government agencies and their partners help workers thrive in quality careers, particularly as California recovers from the COVID-19 pandemic and recession.

“The California Workforce Development Worker Equity Initiative will shed light on how to improve public sector supports and systems while specifically centering the needs and career aspirations of those who have been hit hardest by COVID-19 and racism and other discrimination,” Hung said.

The effort has already begun: The initiative is in the midst of 18 months of community engagement, planning and research, with representatives collecting input from local workers and community leaders. The initiative will then recommend state-level policy changes and highlight opportunities for Californians to push for similar improvements at the federal level.

The initiative also will engage Californians who have been most affected by the recession and those who have been excluded, underserved or marginalized by longstanding structural barriers of discrimination. By soliciting their voices, the initiative aims to increase racial and worker equity in the state’s public workforce development efforts.

“We are extremely grateful for this generous and very timely grant from the James Irvine Foundation,” Gonzalez-Vasquez said. “These funds will help us build upon our partnership with the National Skills Coalition and enable us to focus on ways our society can recover from COVID-19 to build a more equitable economy.”

In addition to the leadership of the UCLA Labor Center and National Skills Coalition, the initiative will benefit from the expertise of a statewide steering committee representing worker centers, nonprofit training providers, labor unions and local workforce boards. The committee members are:

  • Janel Bailey, Los Angeles Black Worker Center
  • John Brauer, California Labor Federation
  • Lisa Countryman-Quiroz, Jewish Vocational Services (San Francisco Bay Area)
  • Rebecca Hanson, SEIU UHW and Joint Employer Education Fund/Shirley Ware Education Center
  • Sheheryar Kaoosji, Warehouse Worker Resource Center
  • Cesar Lara, MILPA Collective and Monterey Bay Central Labor Council
  • Sam Lewis, Anti-Recidivism Coalition
  • Arcenio Lopez, Mixteco/Indigena Community Organizing Project
  • Simon Lopez, Goodwill Southern California
  • Laura Medina, Building Skills Partnership
  • Pedro Ramirez, Central Valley Worker Center
  • Rebecca Rolfe, San Francisco LGBT Center
  • Aquilina Soriano, Pilipino Workers Center
  • Brooke Valle, San Diego Workforce Partnership

The James Irvine Foundation is a private, nonprofit grantmaking foundation dedicated to expanding opportunity for the people of California. The foundation’s focus is a California where all low-income workers have the power to advance economically. Since 1937 the foundation has provided more than $2.09 billion in grants to organizations throughout California, and it has contributed to UCLA since 1970.

This article, written by Ariel Okamoto, originally appeared in the UCLA Newsroom.