Advances in the field of epigenetics show that environmental contaminants can turn genes "on" and "off" triggering serious diseases that are handed down through generations. But there's also a more heartening prospect: The same diseases may be treated by relatively simple changes in nourishment and lifestyle.
Democrats are challenging Republican incumbents in three "Cuban" congressional districts in South Florida. Could the campaigns foreshadow a shift in presidential politics or Cuba policy?
By funding its own research, industry has raised unwarranted doubts about a range of scientific issues — from the risks of tobacco to the reality of climate change — delaying response to public dangers for decades. Can scientists and journalists learn to beat the doubt industry before our most serious problems beat us all?
Across America, nonprofit Web sites are trying to keep public interest journalism alive at the local level. But to provide what print newspapers increasingly do not, these digitized nonprofits must overcome the challenge facing every startup: Eventually, they have to break even.