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Katherine Unger Baillie
Science News Officer
kbaillie@upenn.edu
Biology
What does a dolphin have in common with a fruit fly?
To determine what goes on during sleep, a trio of Penn experts studied sleep function across phylogeny—that is, the evolutionary development of species—to find the origins of the need for sleep.
How one gene in a tiny fish may alter an aquatic ecosystem
Linking genomics to evolution to ecology, the work takes an unusual approach to reveal broad implications of how species adapt to their local environment.
The diversity of rural African populations extends to their microbiomes
In the largest study of its kind, researchers led by PIK Professor Sarah Tishkoff, Matthew Hansen, and Meagan Rubel investigated the gut microbiomes of people from Botswana and Tanzania, and illuminate the impact of lifestyle, geography, and genetics in shaping the microbiome.
Cells and cinema
As a biology major, senior Andrew Ravaschiere spends much of his time in a laboratory conducting cellular research. But as a cinema and media studies minor, he got out of the lab and into the world of filmmaking during the summer, working as an intern for a documentary filmmaker.
How do individual decisions affect group decisions?
Postdoctoral fellow Colin Twomey looks to fish behavior to explore the dynamic between individual and group decision-making.
Bigger brains are smarter, but not by much
Using a large dataset and controlling for a variety of factors, including sex, age, height, socioeconomic status, and genetic ancestry, Gideon Nave of the Wharton School and Philipp Koellinger of Vrije Universiteit Amsterdam found that people with larger brains rated higher on measures of intelligence, but only accounts for two percent of the variation in smarts.
Two from Penn named to new class of AAAS Fellows
Noted for their contributions to dental and biological sciences, respectively, Hyun (Michel) Koo of the School of Dental Medicine and Joshua Plotkin of the School of Arts and Sciences are part of the newest cohort of fellows of the American Association for the Advancement of Science.
Modeling the most common form of vision loss in older adults
Age-related macular degeneration is the leading cause of vision loss in people older than 50. Kathleen Boesze-Battaglia and colleagues have developed a model system that mimics many features of the human condition, giving scientists a platform to gain a deeper understanding of risk factors and possible treatments.
Keeping campus trees—all 6,800 of them—healthy and vibrant
Caring for the trees on Penn’s campus—an official arboretum since last year—is no small undertaking. Staff from Facilities and Real Estate Services and the Morris Arboretum lead the way in ensuring that the University’s trees remain safe, vibrant, diverse, and beautiful.
Dry conditions may have helped a new type of plant gain a foothold on Earth
Plants reap energy from the sun using two photosynthesis pathways, C3 and C4. A new study led by Haoran Zhou, Erol Akçay and Brent Helliker suggests that water availability drove the expansion of C4 species, which may help to explain how different plant lineages came to be distributed on the planet today.
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In the News
Genetic Engineering & Biotechnology News
Scientists Isolate Human Lung Progenitor Cells That Repair Alveolar Damage
Edward E. Morrisey, of the Perelman School of Medicine, has co-authored a paper on lung stem cells in mice and humans, which may lead to the development of new strategies for human lung regeneration.
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The Scientist
Parasitologist, Reprogrammed: A Profile of David Roos
David Roos of the School of Arts and Sciences was profiled for his journey from art major to scientist and for his current work developing EuPathDB, a catalog of “parasites and other pathogens.”
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