SCIENCE IN THE NEWS DAILY
Research Illuminates How Stem Cells May Work
from the San Francisco Chronicle
UC Berkeley scientists are a step closer to understanding how a series of molecular switches can turn on or off the regenerative power of stem cells that normally build new muscle tissue after it has been damaged.
The research, conducted on laboratory mice, is years away from practical therapies for human beings. Nevertheless, this latest work, published online Sunday by the journal Nature, provides insight into how scientists are dissecting, step-by-step, the processes that govern how stem cells work.
A goal of such research is to find ways to intervene and control these molecular switches—to improve healing and perhaps slow the effects of aging.
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PODCASTS: Expanding With the Cosmos
Using the Atacama Cosmology Telescope (ATC), a 6.5-meter microwave collector in Chile, cosmologists are piecing together the early history of the known universe. In an exclusive American Scientist interview, Arthur Kosowsky—a member of the ATC team and a professor in the Department of Physics and Astronomy at the University of Pittsburgh—discusses how he is using ATC to reach back in time billions of years to search for gravitational waves that could verify inflation and reveal unprecedented details about how the cosmos was born.
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