ScienceSay goodbye to the monarch butterfly Increasing use of herbicides on U.S. farmland is decimating monarch butterfly numbers, conservation groups say. They've petitioned the Obama administration to declare monarch a "threatened" species.by Jim Algar
ScienceClimate change damage, a warming ‘hiatus,’ and carbon cuts: So much to do, so little timeby Rebecca Kaplan
ScienceScientists unearth 7,000-year-old copper awl, oldest metal object in Middle Eastby Lori Sandoval