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Tag Archive for: research

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Picture of a hand gently holding a baby’s fingers.

New UCLA center promotes reproductive science and sexual health

January 30, 2023/in College News, Featured Stories, Life Sciences, Main Story - Homepage, Research /by Lucy Berbeo
Picture of a hand gently holding a baby’s fingers.

Aditya Romansa/Unsplash


Holly Ober | January 30, 2023

A new center at UCLA will bring together students, scientists, educators and physicians across a wide range of disciplines to support research and education initiatives designed to improve human reproductive health, promote healthy families and to advance the well-being of society.

The UCLA Center for Reproductive Science Health and Education aims to fill a void in reproductive health knowledge while developing new technologies to improve reproductive health for all. The center’s inaugural director is Amander Clark, a UCLA professor, stem cell biologist and an expert in the field of reproductive sciences.

While reproductive health is often associated with issues of reproduction, infertility and contraception, it also includes healthy human development as well as the study and treatment of menopause and cancers related to reproductive organs. However, individuals and policymakers alike often make decisions around reproductive health that are not based on science.

“In the past several years, far too little of the dialogue and decision-making around sexual and reproductive health has been based in scientific research,” said Tracy Johnson, dean of the UCLA Division of Life Sciences. “Yet, science is the foundation by which health and policy professionals can make rational, informed decisions on topics that impact everyone. The time has arrived for an internationally recognized center for research, education and innovation in the reproductive sciences.”

Challenges in the field today include declining fertility rates, the lack of insurance coverage for infertility treatments and the need for better access to reproductive technologies for all.

• According to the National Center for Health Statistics, 2020 marked the sixth year in a row that fewer babies were born in the United States than any previous year. This is on top of a 60-year worldwide trend in declining fertility rates. In addition, there is a marked shift in the increased age of first-time parents.

• Nearly 8 million Americans of reproductive age face a diagnosis of infertility, but treatments in most U.S. states are not covered by insurance. For women over 40 who use in-vitro fertilization, the chances of having a successful pregnancy and a healthy baby are significantly reduced, according to the Society for Assisted Reproductive Technology. For reasons that are not well understood, even for those under 40, sometimes IVF just doesn’t work.

• People need better and more accessible options for contraception. According to the Bill & Melinda Gates Foundation, almost 40% of women who use contraception stop in their first year because they are not satisfied with existing options.

• There’s also a need for increased access to other reproductive technologies and medical services, especially for LGBTQ and gender-diverse Americans.

Amander Clark

Amander Clark | Don Liebig

The center’s work will include research into the reproductive and endocrine systems, contraception, infertility and pregnancy — as well as the social science of reproduction and reproductive interventions.

“Once established, this will be a home for innovative science and educational programs aimed at changing the national conversation around human reproduction and infertility,” Clark said. “We will develop new therapies toward promoting healthy parents, pregnancies and families of all genders today and for future generations.”

The UCLA Center for Reproductive Science Health and Education will operate in partnership with the division of life sciences at UCLA, the David Geffen School of Medicine at UCLA, the UCLA Jonsson Comprehensive Cancer Center, the Institute for Society and Genetics, and the Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research at UCLA, where Clark is also a member.

The center will serve as a national and international home for training and career development of undergraduate, graduate, postdoctoral and clinical fellows — and create an educational pipeline to benefit the UCLA community and beyond.

Hosted by Dean of Life Sciences Tracy Johnson, the Center for Reproductive Science Health and Education’s first event, “Let’s Talk Science: Conversations About the Future of Reproductive Health,” will be held Feb. 16 at 5:30 p.m. Register for the webinar.


This article originally appeared at UCLA Newsroom. For more news and updates from the UCLA College, visit college.ucla.edu/news.

https://www.college.ucla.edu/wp-content/uploads/2023/01/CHRSE_Banner_Blue.png 900 2000 Lucy Berbeo https://www.college.ucla.edu/wp-content/uploads/2019/07/Uxd_Blk_College-e1557344896161.png Lucy Berbeo2023-01-30 12:23:182023-02-03 15:34:16New UCLA center promotes reproductive science and sexual health
UCLA Fulbright winners collage

Graduate students selected for Fulbright-Hays Fellowship

January 4, 2023/in Awards & Honors, College News, Featured Stories, Life Sciences, Social Sciences, Students /by Lucy Berbeo
UCLA Fulbright winners collage

UCLA’s honorees are (top row from left) Aurora Echevarria, Rebecca Waxman, Degenhart Brown, Carly Pope; and (bottom row) Yiming Ha, Jessie Stoolman, Benjamin Kantner. | UCLA


Vania Sciolini | November 9, 2022

The Fulbright-Hays Doctoral Dissertation Research Abroad fellowship has been awarded to seven UCLA graduate students, the most chosen from any university in the nation.

Sponsored by the U.S. Department of Education, the Fulbright-Hays program provides awardees the opportunity to study aspects of a society or societies, including their culture, economy, history and international relations. The fellowship is designed to contribute to developing and improving the study of modern foreign languages and area studies in the U.S.

The 2022 UCLA Fulbright-Hays fellows come from diverse disciplines. They will conduct their research in the Republic of Benin, Taiwan, Mexico, Panama, Morocco, Spain, India, the United Kingdom and the Brazilian Amazon.

The Fulbright-Hays research abroad program at UCLA is administered by the Division of Graduate Education.  More information is available at the UCLA Fulbright Fellowships website.

The 2022 awardees are:

Degenhart Brown, culture and performance, will study in the Republic of Benin. Using ethnographic fieldwork, Brown focuses on the pragmatism of syncretic religious practice, animal-based power objects, and the relationships between different species including pathogens and divinities to illustrate how traditional-medicine unions inform established knowledge of selfhood and well-being in contemporary Benin.

Yiming Ha, history, will study in Taiwan. Ha’s research focuses on changes to the military in Yuan and Ming China due to socio-economic factors and how the state responded to these changes. He is interested in how the shifts in military mobilization affected the state’s finances, what strategies the state employed in response, and the potential disconnect between the central and local officials in how to best manage the military.

Aurora Echavarria, urban planning, will study in Mexico. Echavarria’s research explores issues at the intersection of local public finance, urban inequality, and the political economy of land and property, with a focus on how local governments tax property in Latin America. Her fieldwork will employ experimental survey methods to examine how perceptions of public good provision influence levels of support for property taxation in Mexico.

Carly Pope, archaeology, will study in Panama. Pope’s research examines archaeological ceramics from Bocas del Toro, Panama, including locally made wares and foreign imports, and the potential they hold to elucidate both interregional systems of cultural interaction and community-level labor organization. She will conduct geochemical and mineralogical analysis of these materials to determine potential locations and methods of production.

Jessie Stoolman, anthropology, will study in Morocco and Spain. Her project focuses on how the Moroccan archival landscape shapes the collective memory of Black-Jewish history. She has published academic and non-academic writing in international journals, including Hespéris-Tamuda and Asymptote.

Rebecca Waxman, history, will study in India and the U.K. Waxman’s research examines occurrences of sexualized violence that marked turning points in modern India. By engaging in pressing historical and contemporary questions concerning sexual violence in India, she hopes to contribute to scholarship on gender, power and knowledge in colonial and postcolonial South Asia.

Benjamin Kantner, geography, will study in the Brazilian Amazon. His current project maps the relations between the capital city of Belém in the state of Pará and the Quilombola communities of the surrounding islands and waterways. This research will enhance recognition of the role traditional territories play in adapting urban areas to climate change and the extra-regional political networks increasingly used by them.


This article originally appeared at UCLA Newsroom. For more news and updates from the UCLA College, visit college.ucla.edu/news.

https://www.college.ucla.edu/wp-content/uploads/2023/01/UCLAFulbrightwinnerscollage-363.jpg 237 363 Lucy Berbeo https://www.college.ucla.edu/wp-content/uploads/2019/07/Uxd_Blk_College-e1557344896161.png Lucy Berbeo2023-01-04 13:14:012023-01-04 13:14:01Graduate students selected for Fulbright-Hays Fellowship
Dustin Hoffman and Tom Cruise in a casino in scene from Rain Man | Metro-Goldwyn-Mayer Studios Inc.Metro-Goldwyn-Mayer Studios Inc.

Recent UCLA grad helped Wikipedia set the record straight on ‘Rain Man’ and autism

December 21, 2022/in Alumni & Friends, College News, Diversity, Equity & Inclusion, Featured Stories, Our Stories, Students, Undergraduate Education /by Lucy Berbeo
Dustin Hoffman and Tom Cruise in a casino in scene from Rain Man | Metro-Goldwyn-Mayer Studios Inc.

Metro-Goldwyn-Mayer Studios Inc.
Dustin Hoffman and Tom Cruise as Raymond Babbitt and Charlie Babbitt in “Rain Man.”


Lucy Berbeo | December 21, 2022

The 1988 film “Rain Man” won four Academy Awards, earned millions at the box office and moved audiences with its depiction of a central character with autism, played by Dustin Hoffman.

But at least some of that depiction obscured or misrepresented aspects of autism spectrum disorder. And because the movie has reached such a wide audience, those discrepancies have informed how generations of viewers perceive the condition. Until recently, many of the same issues also lived on in the Wikipedia entry about “Rain Man.”

That’s where Madeline Utter comes in. Before she graduated from UCLA in June, Utter took a course called “Performance and Disability Studies,” taught by visiting professor Elizabeth Guffey. As part of the course, Utter watched the film for the first time, and she was struck by elements that seemed to misrepresent autism spectrum disorder and savant syndrome. The latter is a condition in which a person with a developmental disorder shows remarkable brilliance in a specific area, such as music or math — the film’s protagonist, Raymond Babbitt, for example, is able to quickly perform complex mathematical calculations.

Madeline Utter

Madeline Utter | Courtesy of Madeline Utter

For a course project, Guffey tasked her students with researching and rewriting Wikipedia entries about representations of disability in performance to ensure they reflected the latest disability studies research. Utter chose “Rain Man” — and saw an opportunity to right a few things that the film, as well as the Wikipedia entry, had gotten wrong.

Wikipedia allows any user to edit articles directly with the proviso that revisions and additions must be attributable to reliable sources or they may be removed by other users. Utter revised the “Rain Man” article, adding context about how the film’s portrayal of neurodivergent conditions led to public misunderstanding.

Wikipedia bills itself as the world’s largest reference website, and the “Rain Man” entry typically receives about 2,500 visitors a day. Since Utter updated the page in May, it has been viewed more than 465,000 times. Utter has two brothers with autism, so the opportunity to improve the public’s understanding of the condition has been especially meaningful for her.

“From watching the film through a critical lens, to getting feedback from my peers on the article, to finally seeing the published article, I learned so much,” said Utter, who graduated in June with a major in communication and a minor in film studies. “The biggest impact that this project had on me was to start to be able to recognize the places in film where disability representation can be improved.”

UCLA’s disability studies program comprises courses in a range of academic subjects, from media arts to anthropology to nursing. Students play an active role in advancing creative approaches to service and advocacy, from improving health care for people with disabilities to creatively reimagining assistive technology using 3D modeling.

“Our students in UCLA Disability Studies are future leaders in their fields, and they are already helping to create a more inclusive society,” said Adriana Galván, dean of undergraduate education in the UCLA College. “By participating in projects such as this one, they are making a real-world impact.”

A program operated by Wiki Education invites college students to write Wikipedia entries through their coursework. The nonprofit profiled Utter’s project on its website.


This article originally appeared at UCLA Newsroom. For more of Our Stories at the College, click here.

https://www.college.ucla.edu/wp-content/uploads/2022/12/DustinHoffmanTomCruiseinRainManMGMStudios-363.jpg 237 363 Lucy Berbeo https://www.college.ucla.edu/wp-content/uploads/2019/07/Uxd_Blk_College-e1557344896161.png Lucy Berbeo2022-12-21 15:18:182023-02-03 15:34:59Recent UCLA grad helped Wikipedia set the record straight on ‘Rain Man’ and autism
Dipterocarp Forest at Danum Valley | Mike Prince/FlickrDipterocarp Forest at Danum Valley | Mike Prince/Flickr

Understanding what makes rainforests distinct from one another could advance conservation efforts

December 21, 2022/in College News, Featured Stories, Life Sciences, Sustainability /by Lucy Berbeo

Even when they’re located near each other, not all rainforests are the same, UCLA-led research finds

Dipterocarp Forest at Danum Valley | Mike Prince/Flickr

A rainforest in Danum Valley, Malaysia. New UCLA-led research demonstrates how diverse rainforests can be, even when they are located in the same region. | Mike Prince/Flickr


Anna Novoselov | October 27, 2022

For many people, the phrase “tropical rainforest” might conjure the image of a landscape teeming with vegetation, exotic animals and extraordinary beauty.

But while the world’s rainforests do share some qualities — including serving as habitats for a diverse range of wildlife and storing vast amounts of atmospheric carbon dioxide — new UCLA-led research shows just how different rainforests can be, even when they’re located near each other.

“Tropical forests are not a monolith,” said UCLA ecologist Elsa Ordway, lead author of the study, which was published Oct. 20 in Communications Earth & Environment.

The study is significant because understanding how forests vary from one another could help shape conservation initiatives and efforts to fight climate change. Decision-makers and stakeholders could use the research to more accurately predict how much forests mitigate climate change — and how vulnerable they are to it.

Vegetation in tropical forests, which draws carbon dioxide from the air for photosynthesis, stores about one-fourth of Earth’s terrestrial carbon in leaves, trunks and roots. The specific species living in a forest affect how much carbon it can hold and determine how it responds to natural and human disturbances.

Ordway and her co-authors analyzed two tropical landscapes in the Malaysian portion of Borneo, categorizing them into seven different types based on their growth rates, mortality rates, how much carbon they can hold and other characteristics.

To categorize the rainforests, the researchers used two types of remote sensing technology: a satellite-based laser detection system called LiDAR to measure the height and distribution of vegetation, and spectroscopy to determine the forests’ chemical composition.

Those measurements helped crystallize how the forests vary both in terms of their structure — tree height, foliage shape and gaps in the canopy, for example — and their function — how ecosystems work and how natural resources are distributed.

The researchers found that the two most important variables for distinguishing forest types were leaf mass per area and the amount of phosphorus contained in the canopy — the upper layer of the forest that is formed by treetops. Phosphorus is a chemical essential to plant growth.

“To be able to actually characterize these differences at large scales has really huge value for our ability to understand these forests and how they function,” Ordway said.

Borneo is the world’s third largest island. Its forests harbor a diverse range of habitats that support more than 15,000 plant species and more than 1,400 animal species. Just 25 acres of Bornean forest coud contain about 700 different tree species — nearly as many as in all of North America.

Since the 1960s, huge swaths of the island’s forests have been destroyed due to deforestation, fires, illegal logging and agricultural expansion — especially for palm oil plantations.

Mapping forests gives policymakers a better understanding of rainforests’ conservation value so they can pass laws and regulations to protect them. In addition, accurately determining rainforests’ carbon storage capacity can help shape market-based conservation programs such as Reducing Emissions from Deforestation and Forest Degradation in Developing Countries — known as REDD+ — which places a cash value on the carbon that rainforests prevent from being released into the atmosphere. Through such programs, large international banks have invested large sums to benefit countries that protect their forests.

And as satellite-based remote sensing improves, so too will the data available to scientists and policymakers. Upcoming satellite missions, such as a NASA hyperspectral satellite mission that is scheduled to launch in 2028, are expected to make vast amounts of data available for free, which could open the door to further studies on differences in forest function. The UCLA-led study could serve as a framework for future analyses and for identifying which variables are meaningful.

“We will soon have available an incredible amount of remote sensing data that’s going to be game-changing for what we’re able to measure and monitor across ecosystems globally,” Ordway said.

Until now, forest types have been mapped by researchers on the ground who identify different species and measure functional traits. But that type of analysis is limited by cost and scientists’ ability to access certain parts of rainforests.

Ordway said the same approach her team used could also be extended to studying other types of forests and other ecosystems.


This article originally appeared at UCLA Newsroom. For more news and updates from the UCLA College, visit college.ucla.edu/news.

https://www.college.ucla.edu/wp-content/uploads/2022/12/DipterocarpForestatDanumValley-363.jpg 237 363 Lucy Berbeo https://www.college.ucla.edu/wp-content/uploads/2019/07/Uxd_Blk_College-e1557344896161.png Lucy Berbeo2022-12-21 11:08:402022-12-21 11:08:40Understanding what makes rainforests distinct from one another could advance conservation efforts
Still image from a fairyland virtual reality environmentCourtesy of Jesse Rissman

When using virtual reality as a teaching tool, context and ‘feeling real’ matter

December 16, 2022/in Box 3, Featured Stories, Life Sciences /by Lucy Berbeo

People remember foreign vocabulary better when lessons are associated with distinct environments, UCLA study finds

Still image from a fairyland virtual reality environment

Subjects in the study were asked to learn Swahili or Chinyanja names for the objects they encountered in a fantasy fairyland, pictured here, or a science fiction landscape. | Courtesy of Jesse Rissman


Holly Ober | December 15, 2022

A new study by UCLA psychologists reveals that when VR is used to teach language, context and realism matter.

The research is published in the journal npj Science of Learning.

“The context in which we learn things can help us remember them better,” said Jesse Rissman, the paper’s corresponding author and a UCLA associate professor of psychology. “We wanted to know if learning foreign languages in virtual reality environments could improve recall, especially when there was the potential for two sets of words to interfere with each other.”

Researchers asked 48 English-speaking participants to try to learn 80 words in two phonetically similar African languages, Swahili and Chinyanja, as they navigated virtual reality settings.

Wearing VR headsets, participants explored one of two environments — a fantasy fairyland or a science fiction landscape — where they could click to learn the Swahili or Chinyanja names for the objects they encountered. Some participants learned both languages in the same VR environment; others learned one language in each environment.

Participants navigated through the virtual worlds four times over the course of two days, saying the translations aloud each time. One week later, the researchers followed up with a pop quiz to see how well the participants remembered what they had learned.

The results were striking: Subjects who had learned each language in its own unique context mixed up fewer words and were able to recall 92% of the words they had learned. In contrast, participants who had learned both sets of words in the same VR context were more likely to confuse terms between the two languages and retained only 76% of the words.

Jesse+Rissman

Jesse Rissman | Courtesy of Jesse Rissman

The study is particularly timely because so many K-12 schools, colleges and universities moved to develop online learning platforms during the COVID-19 pandemic.

“Apps like Zoom provide a rather bland context for learning,” Rissman said. “As VR technology becomes more ubiquitous and affordable, remote learners could be instantly teleported into unique and richly featured contexts for each class.”

The experiment was designed by Rissman and Joey Ka-Yee Essoe, the study’s first author who was a UCLA doctoral student at the time.

Rissman said a key predictor of the subjects’ ability to retain what they had learned was how immersed in the VR world they felt. The less a participant felt like a subject in a psychology experiment — and the more “at one” they felt with their avatar — the more the virtual contexts were able to positively affect their learning.

“The more a person’s brain was able to reconstruct the unique activity pattern associated with the learning context, the better able they were to recall the foreign words they had learned there,” Rissman said.

Psychologists have long understood that people tend to recall things more readily if they can remember something about the surrounding context in which they learned it — the so-called “context crutch” phenomenon. But when information is tied to contextual cues, people can have trouble recalling it later in the absence of those cues.

For example, students might learn Spanish in the same kind of classroom where they learn other subjects. When that happens, their Spanish vocabulary can be tied to the same contextual cues that are tied to other material they’ve been taught, like the Pythagorean theorem or a Shakespeare play. Not only does that similar context make it easier to mix up or forget what they have learned, but it also can make it harder to remember any of the information outside of a classroom setting.

“A key takeaway is that if you learn the same thing in same environment, you’ll learn it really fast,” said Essoe, who is now a postdoctoral scholar at Johns Hopkins University. “But even though you learn fast, you might have trouble with recall. What we were able to harness in this research takes advantage of both learning fast and improving recall in new environment.”

To understand the brain mechanisms that support context-dependent learning, the researchers recruited a separate group of participants and scanned their brains with functional magnetic resonance imaging, or fMRI. As the subjects attempted to recall foreign words while in the scanner, their brain activity indicated that they were thinking about the context in which they had learned each word.

That finding suggests that virtual reality can enhance learning if it is convincingly produced and if different languages or scholastic subjects are taught in highly distinctive environments.

Rissman said although the study only assessed how people learned a foreign language, the results indicate that VR could be useful for teaching other subjects as well. Similar approaches could also be used for mental and behavioral health therapies and to help patients adhere to doctors’ instructions after medical visits: Patients might be able to remember such guidance better if they’re in their own homes while chatting online with their doctors, for example.

Said Essoe: “Variable contexts can ground information in more environmental cues.”


This article originally appeared in the UCLA Newsroom. For more news and updates from the UCLA College, visit college.ucla.edu/news.

https://www.college.ucla.edu/wp-content/uploads/2022/12/Fairylandvirtualrealityenvironment-363.png 237 363 Lucy Berbeo https://www.college.ucla.edu/wp-content/uploads/2019/07/Uxd_Blk_College-e1557344896161.png Lucy Berbeo2022-12-16 12:28:212022-12-16 12:28:21When using virtual reality as a teaching tool, context and ‘feeling real’ matter

First underground radar images from Mars Perseverance Rover reveal some surprises

August 25, 2022/in College News, Featured Stories, Physical Sciences /by Lucy Berbeo

Unexpectedly tilted rock layers in the Jezero crater hint at a complex geological history

Image of Jezero crater delta

Aerial photo of the remains of a delta where a water source once fed an ancient lake at the Jezero crater. NASA’s Perseverance Rover is currently exploring the area. | NASA/JPL-Caltech/ASU


Holly Ober | August 25, 2022

Key takeaways:

• Roving the Red Planet. NASA’s Perseverance landed on Mars in February 2021 and has been gathering data on the planet’s geology and climate and searching for signs of ancient life.
• What lies beneath. The rover’s subsurface radar experiment, co-led by UCLA’s David Paige, has returned images showing unexpected variations in rock layers beneath the Jezero crater.
• Probing the past. The variations could indicate past lava flows or possibly a river delta even older than the one currently being explored on the crater floor.

After a tantalizing year-and-a-half wait since the Mars Perseverance Rover touched down on our nearest planetary neighbor, new data is arriving — and bringing with it a few surprises.

The rover, which is about the size of car and carries seven scientific instruments, has been probing Mars’ 30-mile-wide Jezero crater, once the site of a lake and an ideal spot to search for evidence of ancient life and information about the planet’s geological and climatic past.

In a paper published today in the journal Science Advances, a research team led by UCLA and the University of Oslo reveals that rock layers beneath the crater’s floor, observed by the rover’s ground-penetrating radar instrument, are unexpectedly inclined. The slopes, thicknesses and shapes of the inclined sections suggest they were either formed by slowly cooling lava or deposited as sediments in the former lake.

Image of RIMFAX subsurface readings

Top: Path of the Perseverance Rover through the Jezero crater. Middle: Subsurface radar image obtained by RIMFAX. Bottom: Diagram indicating where unexpectedly inclined rock layers were located. | Hamran et. al., 2022


Perseverance is currently exploring a delta on the western edge of the crater, where a river once fed the lake, leaving behind a large deposit of dirt and rocks it picked up along its course. As the rover gathers more data, the researchers hope to clear up the complex history of this part of the Red Planet.

“We were quite surprised to find rocks stacked up at an inclined angle,” said David Paige, a UCLA professor of Earth, planetary and space sciences and one of the lead researchers on the Radar Imager for Mars Subsurface Experiment, or RIMFAX. “We were expecting to see horizontal rocks on the crater floor. The fact that they are tilted like this requires a more complex geologic history. They could have been formed when molten rock rose up towards the surface, or, alternatively, they could represent an older delta deposit buried in the crater floor.”

Image of David Paige

David Paige, deputy principal investigator for Perseverance’s RIMFAX instrument. | Courtesy of David Paige

Paige said that most of the evidence gathered by the rover so far points to an igneous, or molten, origin, but based on the RIMFAX data, he and the team can’t yet say for certain how the inclined layers formed. RIMFAX obtains a picture of underground features by sending bursts of radar waves below the surface, which are reflected by rock layers and other obstacles. The shapes, densities, thicknesses, angles and compositions of underground objects affect how the radar waves bounce back, creating a visual image of what lies beneath.

During Perseverance’s initial 3-kilometer traverse, the instrument has obtained a continuous radar image that reveals the electromagnetic properties and bedrock stratigraphy — the arrangement of rock layers — of Jezero’s floor to depths of 15 meters, or about 49 feet. The image reveals the presence of ubiquitous layered rock strata, including those that are inclined at up to 15 degrees. Compounding the mystery, within those inclined areas are some perplexing highly reflective rock layers that in fact tilt in multiple directions.

“RIMFAX is giving us a view of Mars stratigraphy similar to what you can see on Earth in highway road cuts, where tall stacks of rock layers are sometimes visible in a mountainside as you drive by,” Paige explained. “Before Perseverance landed, there were many hypotheses about the exact nature and origin of the crater floor materials. We’ve now been able to narrow down the range of possibilities, but the data we’ve acquired so far suggest that the history of the crater floor may be quite a bit more complicated than we had anticipated.”

Rendering of Perseverance, whose RIMFAX technology is exploring what lies beneath the Martian surface.

Rendering of Perseverance, whose RIMFAX technology is exploring what lies beneath the Martian surface. | NASA/JPL/Caltech/FFI


The data collected by RIMFAX will provide valuable context to rock samples Perseverance is collecting, which will eventually be brought back to Earth.

“RIMFAX is giving us the backstory of the samples we’re going to analyze. It’s exciting that the rover’s instruments are producing data and we’re starting to learn, but there’s a lot more to come,” Paige said. “We landed on the crater floor, but now we’re driving up on the actual delta, which is the main target of the mission. This is just the beginning of what we’ll hopefully soon know about Mars.”

The paper, “Ground penetrating radar observations of subsurface structures in the floor of Jezero crater, Mars,” is one of three simultaneously published papers discussing some of the first data from Perseverance.

This article originally appeared in the UCLA Newsroom. For more news and updates from the UCLA College, visit college.ucla.edu/news.

https://www.college.ucla.edu/wp-content/uploads/2022/08/JezeroCraterDelta2-1.jpg 237 363 Lucy Berbeo https://www.college.ucla.edu/wp-content/uploads/2019/07/Uxd_Blk_College-e1557344896161.png Lucy Berbeo2022-08-25 20:10:332023-01-07 15:38:04First underground radar images from Mars Perseverance Rover reveal some surprises
Image of Marilyn Raphael, director of the UCLA Institute of the Environment and Sustainability.Image credit: Ashley Kruythoff/UCLA

Talking environmental solutions with Marilyn Raphael

April 21, 2022/in College News, Faculty, Featured Stories /by Lucy Berbeo
Image of Marilyn Raphael, director of the UCLA Institute of the Environment and Sustainability.

Marilyn Raphael, director of the UCLA Institute of the Environment and Sustainability. Image credit: Ashley Kruythoff/UCLA


By David Colgan | April 21, 2022

Environmental news often focuses on the scariest problems, from climate disasters to extinctions.

While it’s important to understand these concerns, there are reasons for hope at UCLA, where faculty, researchers and students are finding solutions — technology to reduce environmental harms, ways of adapting to new climate realities, and strategies for battling environmental racism and injustice.

Marilyn Raphael, world-renowned environmental leader, climate scientist and director of the UCLA Institute of the Environment and Sustainability, shared some environmental good news as we celebrate the planet we all depend on this Earth Day.

Over the past few decades, we’ve witnessed a growing number of localized problems from worsening storms to urban heat islands, due to climate change. How are UCLA researchers and students addressing these problems?

The ways we’re working to mitigate climate change are too many to list. But I’ll start in our own backyard — Los Angeles and California. We’re doing an enormous amount of research to understand and respond to wildfires, droughts and extreme flooding. Our faculty partner with state and local agencies so disaster prevention and response can be informed by good data and robust projections. It is difficult to conceive of flooding during a megadrought, but research shows that climate change is increasing the likelihood of flooding, and California must be ready for it. Cities like Sacramento, Stockton and huge parts of Los Angeles could be flooded during these extreme events. We need a plan for how we’ll react when that happens.

Looking globally, we’re working in places such as the Congo Basin, where we help local populations learn sustainable agriculture practices that can sustain their communities while protecting the environments they depend on. Small island nations are another focus. These places are the worst hit by hurricanes, depleted fisheries and sea level rise.

As a climate leader, how do we deal with the seemingly insurmountable problem of global climate change? What are the most promising ways that we can address this crisis in a meaningful way? And to what extent can we stop or slow it?

From the start, I think it’s important to understand we now have unavoidable change. We do have a chance to slow it and make it less severe, but only if we act now. Globally, we have done nothing sufficient enough to reduce emissions to a level that will change our trajectory.

One of the most important things we’re trying to do is to mobilize people with information and the means with which to engage with these issues in creative ways, from film to art installations. Few people get as excited about data as we researchers do. So we’re working on understanding and improving how people interact with their realities.

Sustainable cities have got to be another part of our response. More and more people (55% of the world’s population live in urban areas – headed for 68% by 2050) are living in cities, which makes them one of our best chances at getting more sustainable. How people get water, power, food — cities can become more efficient at all of it, and we have researchers laying a strong foundation for them to do so.

Can you share a couple of examples of new things being done to protect ecosystems and species?

UCLA researchers are using genetics in new ways that make conservation more efficient and effective. The California Conservation Genomics Project is sequencing the genomes of thousands of organisms across the state to create the most comprehensive multispecies genomic dataset. That can then be used to identify local and regional conservation concerns and protect biodiversity.

Genomic research is also being used to understand things like how climate change is affecting migratory birds, how animals disperse seeds in tropical regions and in numerous other ways. And that’s just genomics. We’re also combining field research with remote sensing data from NASA to look at the health of our forests, and we are engaging the indigenous groups who manage 25% of the world’s natural lands and have intimate knowledge of their environments stretching back millennia.

Mental health professionals are seeing more and more people having trouble dealing with the realities and their perceptions about environmental threats. What would you tell someone who is having such feelings?

Please, don’t just sit with your fears. Get out there and spend some time in nature — see what’s worth protecting. Spending time among oceans, mountains, forests or parklands is a salve for mental well-being, and there’s a growing body of psychological research to support this.

Another way to deal with climate stress and anxiety is to think of one thing that you as an individual can do to help. This does not have to be a big thing; it can be a small thing. Then do that and engage your friends. Don’t focus continuously on the whole problem — it is impossible for a single person to do anything reasonable to solve it. We are part of a vast, interconnected system. Because of that connection, what we do as individuals has an effect. Just do what you can and have faith that someone else is doing what they can too.

This article originally appeared in the UCLA Newsroom. For more news and updates from the UCLA College, visit college.ucla.edu/news.

https://www.college.ucla.edu/wp-content/uploads/2022/04/Marilyn_Raphael-363.jpg 267 363 Lucy Berbeo https://www.college.ucla.edu/wp-content/uploads/2019/07/Uxd_Blk_College-e1557344896161.png Lucy Berbeo2022-04-21 15:58:422023-01-07 15:56:24Talking environmental solutions with Marilyn Raphael
Image of two marmotsImage credit: Daniel Blumstein/UCLA

The secret to longevity? Ask a yellow-bellied marmot

April 4, 2022/in Box 6, College News, College Newsletter, Faculty, Featured Stories /by Lucy Berbeo
UCLA-led study shows that aging slows to a crawl when the animals hibernate
Image of two marmots

During their time hibernating, marmots’ breathing slows, they burn a single gram of fat per day, and their body temperature plummets to the point that “they feel like fuzzy, cold rocks.” Image credit: Daniel Blumstein/UCLA

By Stuart Wolpert

What if you were told there was a completely natural way to stop your body from aging? The trick: You’d have to hibernate from September to May each year.

That’s what a team of UCLA biologists and colleagues studying yellow-bellied marmots discovered. These large ground squirrels are able to virtually halt the aging process during the seven to eight months they spend hibernating in their underground burrows, the researchers report today in the journal Nature Ecology and Evolution.

The study, the first to analyze the rate of aging among marmots in the wild, shows that this anti-aging phenomenon kicks in once the animals reach 2 years old, their age of sexual maturity.

The researchers studied marmot blood samples collected over multiple summer seasons in Colorado, when the animals are active above ground, to build statistical models that allowed them to estimate what occurred during hibernation. They assessed the biological aging of the marmots based on what are known as epigenetic changes — hundreds of chemical modifications that occur to their DNA.

“Our results from different statistical approaches reveal that epigenetic aging essentially stalls during hibernation,” said lead author Gabriela Pinho, who conducted the study as a UCLA doctoral student advised by Daniel Blumstein and Robert Wayne, professors of ecology and evolutionary biology. “We found that the epigenetic age of marmots increases during the active season, stops during hibernation and continues to increase in the next active season.”

This process, the researchers said, helps explain why the average life span of a yellow-bellied marmot is longer than would be expected from its body weight.

Hibernation, an evolutionary adaptation that allows animals to survive in harsh seasonal environments where there is no food and temperatures are very low, is common among smaller mammals, like marmots, native to the mountainous western regions of the U.S. and Canada.

The marmots’ hibernation alternates between periods of metabolic suppression that last a week or two and shorter periods of increased metabolism, which generally last less than a day. During metabolic suppression, their breathing slows and their body temperature drops dramatically, to the point that “they feel like fuzzy, cold rocks,” Blumstein said.

In addition, they use a miniscule amount of energy, burning about a single gram of fat a day. “That’s essentially nothing for a 5,000-to-6,000–gram (11–13 lbs.) animal,” Pinho noted. This allows them to save energy and survive long periods without food.

During their active summer season, marmots eat a lot, doubling their weight so that they have sufficient fat to survive the next hibernation period.

All of these hibernation-related conditions — diminished food consumption, low body temperature and reduced metabolism — are known to counter the aging process and promote longevity, the researchers said. This delayed aging is likely to occur in other mammals that hibernate, they said, because the molecular and physiological changes are similar.

“This study is the closest scientists have gotten to showing that biological processes involved in hibernation are important contributors to their longer-than-expected life span based on their body weight,” said Pinho, now a researcher with the nonprofit Institute of Ecological Research’s Lowland Tapir Conservation Initiative in Brazil.

“The fact that we are able to detect this reduced aging during hibernation in a wild population means the effect of hibernation on slowing aging is really strong,” said Blumstein, a member of the UCLA Institute of the Environment and Sustainability and a senior author of the study. “This study was possible only because we had access to blood samples from free-living animals whose ages are known. Not many wild populations have detailed information about individual chronological age, and this reinforces the importance of long-term field projects.”

There may be biomedical advantages to inducing hibernation conditions in humans or human cells, the researchers said — to preserve organs for transplantation, for example, or as part of long-term space missions.

For the current publication, Pinho and her colleagues studied 73 female yellow-bellied marmots throughout their lives and collected blood samples every two weeks over 14 active seasons, analyzing them regularly. The marmots’ chronological age was calculated based on the date at which juveniles first emerged from their natal burrows. (The age of male marmots is difficult to determine, the researchers said, because they often migrate from one area to another.)

The research is part of part of a 60-year study of yellow-bellied marmots based at the nonprofit Rocky Mountain Biological Laboratory in Colorado and was funded by Brazil’s Science Without Borders program, part of the country’s National Counsel of Technological and Scientific Development, and the National Geographic Society, a Rocky Mountain Biological Laboratory research fellowship and the National Science Foundation.

Other senior study authors are Robert Wayne; Matteo Pellegrini, a UCLA professor of molecular, cell and developmental biology; Steve Horvath, a professor of human genetics and biostatistics at UCLA’s Fielding School of Public Health who developed the “epigenetic clock” in 2013; Julien Martin from Canada’s University of Ottawa; and Sagi Snir from Israel’s University of Haifa. The authors received insights from UCLA’s Statistical Consulting Group.

This article originally appeared in the UCLA Newsroom. For more news and updates from the UCLA College, visit college.ucla.edu.

https://www.college.ucla.edu/wp-content/uploads/2022/04/Marmots2-1.jpg 237 363 Lucy Berbeo https://www.college.ucla.edu/wp-content/uploads/2019/07/Uxd_Blk_College-e1557344896161.png Lucy Berbeo2022-04-04 17:16:152022-04-05 13:02:17The secret to longevity? Ask a yellow-bellied marmot
Image of actor Vin Diesel with director Justin Lin on the set of “F9: The Fast Saga.”Courtesy of Universal Studios

People of color helped keep movie business afloat during pandemic

April 4, 2022/in Box 5, College News, College Newsletter, Faculty, Featured Stories /by Lucy Berbeo

UCLA Hollywood Diversity Report emphasizes importance of minority audiences

Image of actor Vin Diesel with director Justin Lin on the set of “F9: The Fast Saga.”

Actor Vin Diesel, left, with director Justin Lin on the set of “F9: The Fast Saga.” The movie, which featured a cast that was more than 50% minority, was the year’s third highest-grossing film at the box office. Image Courtesy of Universal Studios

By Jessica Wolf | March 24, 2022

A large percentage of the movie business’s box office revenue and home viewership was driven by consumers of color in 2021, according to UCLA’s latest Hollywood Diversity Report. The report examines the 252 top-performing English-language films — based on box office receipts and streaming data — during the second year that the COVID-19 pandemic forced movie studios to adopt unconventional release strategies.

The report tracks progress for women and minorities in acting, directing and writing roles, and analyzes audience segments by race and ethnicity, focusing on Asian American, Black, Latino and white audiences, and age, focusing on viewers 18 to 49.

Published twice a year — with one analysis of movies and another for TV — the Hollywood Diversity Report has consistently shown increases in the percentages of women and people of color in key jobs in front of the camera. Researchers have also tracked sustained, albeit stubborn, growth for women and minorities in Hollywood writing and directing jobs.

Chart showing that The largest single category of films considered in this report includes those that were released solely on streaming platforms12 (45.6 percent), which is down from the share of streaming-only films considered in the previous report for 2020 (54.6 percent). By contrast, only 17.9 percent of films were released solely in theaters in 2021.13 Meanwhile, 20.2 percent of films were released both on streaming platforms and in limited theaters,14 while 13.1 percent were released both on streaming platforms and widely in theaters.15 Finally, only 1.6 percent of films were released both theatrically and through transactional video on demand,16 and 1.6 percent were released on streaming after a modified theatrical release window (45+ days).17

The report’s authors noted that 2021 was the first year since they began tracking such statistics that the majority of Academy Awards went to films that were directed by people of color and featured minority actors in lead roles. And the year’s third highest-grossing film at the box office was “F9: The Fast Saga,” which featured a cast that was more than 50% minority and was directed by Taiwanese American filmmaker Justin Lin. Sixty-five percent of opening weekend ticket sales for “F9” were to minority audiences, the highest figure among all films in the top 10.

The report tracks the numbers of writers, directors and actors who identify as Asian American, Black, Latino, Middle Eastern/North African, multiracial and Native American. People in those groups make up 42.7% of the U.S. population, and they form an important consumer bloc for entertainment, including movies.

For six of the 10 top-grossing films that opened in theaters in 2021, people of color accounted for the majority of opening-weekend U.S. ticket sales.

The report also analyzed box office performance based on the diversity of the movies’ casts — whether minority actors made up less than 11% of the cast, 11% to 20%, and so on, up to 51% or more. The study revealed that films with 21% to 30% minority actors had higher median global box office receipts than films in any other tier. That echoed a pattern since the report began tracking box office performance in 2011.

The report also found that, as in previous years, films with the least diverse casts (11% or less minority) were the poorest performers at the box office.

Chart showing that Median global box office peaked for films with casts that were from 21 to 30 percent minority in 2021 ($107.4 million). Twenty-five films fell into this cast diversity interval, including Venom: Let There Be Carnage ($501.0 million), A Quiet Place Part II ($297.4 million), and Cruella ($233.3 million). In a year in which theater attendance began to rebound after a COVID-decimated 2020, theatrically released films with relatively diverse casts again outshined their less-diverse counterparts at the box office. Indeed, the 14 films with the least-diverse casts (less than 11 percent minority) were again the poorest performers in 2021. “Last year, every time a big movie exceeded expectations or broke a box office record, the majority of opening weekend audiences were people of color,” said Ana-Christina Ramón, a co-author of the report and the director of research and civic engagement for the UCLA College division of social sciences. “For people of color, and especially Latino families, theaters provided an excursion when almost everything else was shut down. In a sense, people of color kept studios afloat the past couple of years.

“Studios should consider them to be investors, and as investors, they should get a return in the form of representation.”

Overall, 43.1% of actors in the movies analyzed by the report were minorities. That’s more than double the percentage from 2011, the first year of data collected by the authors, when 20.7% of actors were minorities. And 31.0% of the top-performing films in 2021 had casts in which the majority of the actors were minorities.

“Minorities reached proportionate representation in 2020 for the first time when it comes to overall cast diversity in films, and that held true again in 2021,” said Darnell Hunt, dean of the social sciences at UCLA and co-author of the report.

Hunt said the phenomenon is probably due in part to the greater number of movies that are initially released on streaming services: Of the films analyzed in the report, 45.6% were released on streaming services only.

Chart showing that During the second full year of the pandemic, the volume of major films released via streaming platforms continued to increase, from 87 films in 2020 to 164 in 2021. Again, for all groups, median ratings were highest for relatively diverse streaming films in 2021. That is, for viewers 18-49 (3.08 ratings points) and Black households (12.49 ratings points), ratings peaked for streaming films with majority-minority casts. Seventy-two films fell into this cast diversity interval in 2021, including: Raya and the Last Dragon, Coming 2 America, Vivo, and Mortal Kombat. For viewers 18-49, though, it should be noted that streaming films with casts that were from 21 percent to 30 percent minority came in a close second (2.94 ratings points). For White (5.10 ratings points), Latinx (7.34 ratings points), Asian (5.90 ratings points), and other-race households (5.48 ratings points), streaming films that were from 21 percent to 30 percent minority also enjoyed the highest ratings in 2021. Examples of the 36 films that fell into this diversity interval include: Don’t Look Up, The Boss Baby: Family Business, and The Suicide Squad.

“We do think this dual-release strategy is here to stay,” Hunt said. “And it could have a lasting impact on diversity metrics in front of and behind the camera as studios think about how to finance content for different platforms.”

For example, the report found that women and people of color were far more likely than white men to direct films with budgets less than $20 million.

“A small production budget usually means that there is also little to no marketing and studio support, unless it’s from a production company known for making art house films,” Ramón said. “And that makes it more difficult for filmmakers to get the next opportunity if their films have to fight for attention.”

Hunt said studios are likely to bank on big-budget tentpole movies and sequels as traditional box office drivers, even as they continue to experiment with release platforms and adjust the amount of time between films’ theatrical releases and their arrival on streaming services or on DVD or Blu-ray.

Among the 2021 films released to streaming services, those with casts in which a majority of actors were non-white enjoyed the highest ratings among viewers aged 18 to 49 and in Black households. Seventy-two films with majority-minority casts were released on streaming in 2021, including “Raya and the Last Dragon,” “Coming 2 America,” “Vivo” and “Mortal Kombat.”

Chart showing that Among the White,24 Black, Latinx, multiracial, and MENA directors helming 2021 films, women lagged far behind men. Only among Asian and Native directors did women approach or reach parity with their male counterparts in securing these important positions.

“In 2021, diversity in front of the camera did not equate to more opportunities behind the camera for filmmakers who are women and people of color,” Ramón said. “They continue to receive less financing, even when they make films with white lead actors. Most of these filmmakers are relegated to low-budget films. For women of color, directing and writing opportunities are really the final frontier.”

Of the filmmakers who directed the movies analyzed in the report, 21.8% were women and 30.2% were people of color. Among the screenwriters for those films, 33.5% were women and 32.3% were people of color. Diversity in both jobs increased incrementally from 2020.

Out of the 76 minority directors of 2021’s top films, just 23 were women. And among Black, Latino and multiracial directors, at least twice as many were men as women in each racial or ethnic classification.

Although there was gender parity among Asian American and Native American directors, the overall numbers of directors from those groups were very small: just 17 Asian American directors and and just two Native American directors were represented in 2021. Among white directors, 32 were women and 143 were men.

The authors counted one trans woman among the directors of the 2021 films they analyzed.

This article originally appeared in the UCLA Newsroom. For more news and updates from the UCLA College, visit college.ucla.edu/news.

https://www.college.ucla.edu/wp-content/uploads/2022/04/1-VinDieselandJustinLin-263.jpg 237 363 Lucy Berbeo https://www.college.ucla.edu/wp-content/uploads/2019/07/Uxd_Blk_College-e1557344896161.png Lucy Berbeo2022-04-04 11:21:082022-04-21 16:39:24People of color helped keep movie business afloat during pandemic
Illustration of rat near Hollywood signAmisha Gadani/UCLA

Intricacies of L.A.’s urban ecosystem are focus of new UCLA podcast

February 28, 2022/in College News /by Lucy Berbeo
Illustration of rat near Hollywood sign

The podcast’s premiere episode explores the conflict between people’s attempts to battle one species, rats, while preserving another, mountain lions. Image by Amisha Gadani/UCLA

By Jonathan Van Dyke

Not all of the celebrities in Los Angeles are humans.

Just witness the excitement around sightings of the city’s famous wild animals. One recent Los Angeles Times headline read, “Famed mountain lion P-22 makes dramatic appearance in Beachwood Canyon backyard.”

But even Angelenos who are fascinated by the big cats of the Santa Monica Mountains might not realize that the animals are threatened by factors that seem totally unrelated to their natural habitats. For example, what if the rodenticide being used to fight rat infestations in Los Angeles neighborhoods might ultimately harm P-22 and his running mates?

That’s the topic of the first episode of “The Labyrinth Project,” a new UCLA podcast available now on Apple, Spotify, Google, Amazon and Stitcher. Through six episodes, the series engages listeners in a range of ecological conundrums, all of which are as interconnected as the city’s vast natural ecosystems.

Its creator is Christopher Kelty, a UCLA anthropology professor and member of the UCLA Institute for Society and Genetics. Kelty’s Labyrinth Project research initiative inspired the podcast, and his work is funded in part by the UCLA Sustainable LA Grand Challenge.

“People see nature in different ways, and with different stakes,” he said. “Some people want to conserve nature in a certain way, other people want to exploit it and others are afraid of it. We wanted to really explore that idea.”

The premiere episode explores the conflict between people’s attempts to battle one species, rats, while preserving another, mountain lions. Studies by UCLA researchers and others have shown that rats killed by pesticides wind up in the food chain that ultimately leads up to bobcats and mountain lions, which can damage their immune systems and alter their genetics.

“We could ban the poisons, but the question remains: Do we want to live with rats? Should we be changing our relationship to rats as well as mountain lions?” Kelty said. “This podcast is an attempt to say that if you focus problem by problem, you won’t see the bigger picture. We’re trying to bring the bigger picture into focus in a way that’s easy to grasp. And we’re asking listeners to take a step back, and maybe to not have a strong opinion immediately.”

The podcast is written and produced by Kelty and five UCLA undergraduates and graduate students. Future episodes, which will be released each Monday, explore stories around coyotes, feral cats and the pressure people can feel from being bombarded with messages about living sustainably.

“I really delved into my own feelings about trying to live a sustainable lifestyle,” said Emma Horton, a third-year undergraduate student majoring in human biology and society, and a co-producer of one episode. “I found what I call ‘sustainability guilt practices’ all around me, and I realized there are these subtle forms of shaming consumers into living environmentally conscious lives, even though a lot of it is really out of reach for the average person.”

The team represents a wide range of academic interests. Spencer Robins, for example, is a doctoral candidate in English, with a focus on environmental literature.

“If you go out into Los Angeles and start talking with people who really know and care about the natural world here, you’re going to meet really wild characters with wild stories,” he said. In the Labyrinth Project, those characters range from trained scientists to a family that feeds a coyote at its front door to members of a satanist cult that morphed into the no-kill movement in Los Angeles.

For Chase Niesner, a graduate student in the UCLA Institute of the Environment and Sustainability, the project drove home the interconnectedness of a wide range of issues.

“What this project is really about is understanding and respecting the complexity of the urban ecosystem, and understanding that if you pull one thread, it changes everything else,” he said. “In urban ecology, you really can’t think of any one conversation separately from the others.”

This article originally appeared in the UCLA Newsroom. For more news and updates from the UCLA College, visit college.ucla.edu.

https://www.college.ucla.edu/wp-content/uploads/2022/02/2-urbanecosystempodcast-363x237.png 237 363 Lucy Berbeo https://www.college.ucla.edu/wp-content/uploads/2019/07/Uxd_Blk_College-e1557344896161.png Lucy Berbeo2022-02-28 12:13:512022-03-09 14:26:17Intricacies of L.A.’s urban ecosystem are focus of new UCLA podcast
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