Addressing Global Hunger & Poverty through Agricultural Development
Dr. Rajiv Shah, director of Agricultural Development at the Bill & Melinda Gates Foundation, delivers an overview of the Foundation’s programs that addressing global poverty and hunger, and a panel of experts from the College of Natural Resources responds by discussing the challenges and opportunities to improving the lives of smallholder farmers and their families through philanthropy, technology, and policy. With questions from the audience.
Rapid escalation characterizes arms race between virus and host
BERKELEY – The interaction between a virus and its host is often portrayed as an arms race, with each new viral attack parried by the host and each new defense by the host one-upped by the virus.
Researchers have for the first time documented this arms race within the genes of both the virus and its host.
In the May 23 issue of Science, the researchers confirm that a sophisticated microbial "immune system" spits out bits of RNA to silence viral genes, and they also report the viruses' counterstrategy - to shuffle their DNA until their genome sequences becomes scrambled enough to evade the RNA silencers.
New study analyzes why endangered parrot population isn't recovering
BERKELEY – The population of wild Puerto Rican parrots, among the most endangered birds in the world, has languished for decades, with several dozen remaining birds unable to break through the bottleneck that prevents their numbers from growing.
A new study by an international team sheds light on the factors influencing the stalled growth of this parrot's population and, in turn, provides an analytical tool that could help pinpoint the biggest factors hindering the recovery of other endangered species.
"This is the first time a framework has been developed to integrate simultaneously the multiple factors impacting the decline of a species," said Steven Beissinger, professor of conservation biology at UC Berkeley's Department of Environmental Science, Policy & Management and lead author of the paper. "The Puerto Rican parrot's wild population has only increased, on average, by about one bird a year, and it can't seem to get out of that funk."