Grassroots effort pays dividends on presidential campaign trail

The run-up to the 2008 U.S. presidential election campaign--which kicks off with the Iowa caucuses on 3 January and the New Hampshire primary 5 days later--has been a coming-out party for climate chang

Hack the planet: Science's best hope-or worst nightmare-for averting climate catastrophe

v+279hlm.;24c

Global warming, hotter than ever

Climate change, a perennial runner-up for Breakthrough of the Year, broke from the pack this year--both in the pages of this section and in the public arena

Stem cell supporters hail results, but political lessons aren't cear

Although voters in several states backed candidates supporting expanded research with embryonic stem cells, the impact of those victories on federal policy that restricts the use of stem cells is much harder to discern