News
Historic plutonium sample traced to Seaborg, Manhattan Project
A tiny sliver of plutonium safely stored on the UC Berkeley campus is making news for its connection to a momentous point in history. Nuclear scientists have recently determined with near certainty that the plutonium was created by a team led by the late UC Berkeley chemist Glenn Seaborg as part of the Manhattan Project.
World’s oldest butchery tools gave evolutionary edge to human communication
Two and a half million years ago, our hominin ancestors in the African savanna crafted rocks into shards that could slice apart a dead gazelle, zebra or other game animal. Over the next 700,000 years, this butchering technology spread throughout the continent and, it turns out, came to be a major evolutionary force, according to new research that combines the tools of psychology, evolutionary biology and archaeology.
Blocking hormone could eliminate stress-induced infertility
Berkeley scientists show that the effects of chronic stress on fertility persist long after the stress is gone. This is because a hormone that suppresses fertility, GnIH, remains high even after stress hormone levels return to normal. In rats, they successfully blocked the hormone gene and restored normal reproductive behavior, suggesting therapeutic potential for stressed humans and animals in captive breeding programs.
Beyond providing clean water: A profile of a development engineer
Listening to an academic lecture on flood prediction while a fifth of Pakistan was flooded by monsoon rains sparked a humanitarian drive in Syed Imran Ali’s studies in safe water delivery. Now he’s a post-doc at UC Berkeley’s Blum Center for Developing Economies, pursuing his vision of development engineering, which means helping bring safe water to people in ways that involve them and take into account their actual needs and realities.
Study links birth control shot to moderately increased risk of HIV infection
An analysis of 12 observational studies from sub-Saharan Africa involving 39,560 women has found that use of an injectable birth control moderately increased the risk of becoming infected with HIV. The risk increased by 40 percent compared with women using other contraceptive methods or no birth control.
To trigger body’s energy-burning brown fat, just chill
UC Berkeley researchers found that exposure to cold temperatures increases levels of a newly discovered protein, Zfp516, that is critical for the formation of brown fat, the type of fat in our bodies that generates heat. Mice with boosted levels of Zfp516 gained 30 percent less weight than control mice when both groups were fed a high-fat diet.
A Big Idea: Teaching leadership, female to female
Born of UC Berkeley's Big Ideas contest, 100 Strong has overcome unexpected challenges to evolve into a leadership and mentoring program, with female undergraduates working with high school and middle school girls to boost their graduation rates and success in the world. The program's founders hope to make it a model for other campuses.