Congress must fund safety research for this atom-manipulating industry.
Chinese environmental activist Tian Jun found that in order to clean up Chengdu's rivers, she needed to look upstream.
Toxic blood thinner may have killed as many as 81 people, US says.
Some say chemical company is behind efforts to sink 'rBGH-free' milk choice.
Readers write about tobacco control, the Fed's power, market crisis in Uganda, and entitlements.
Congress is closer than ever to bringing tobacco under federal regulation.