EarthAcid rain's surprising legacy in US rivers Air pollution controls mean that the acid rain that devastated forests, ponds and streams in the US has reduced, but left excessive alkalinity in its wake 51¶¯Âþ
HealthFood stamps could help US trim obesity epidemic The US's Supplemental Nutrition Assistance Program feeds nearly 48 million people, but may soon suffer deep cuts. Will a big research opportunity be missed? 51¶¯Âþ