Held two decades ago, the original Earth Summit gathered world leaders in Rio de Janeiro to try to grapple with climate change, biological diversity, and other environmental challenges. Rio+20 is smaller, but still generating interesting ideas.
Organisms are responding to climate change at a pace much faster than scientists estimated about a decade ago, according to a new study in the journal Science.
Many scientists suggest that climate changes could be causing certain kinds of wildfires for which the West's forests are not well adapted. This year could help researchers better understand and fight the trend.
Habitat destruction drives species extinct more slowly than previously thought, according to a new model described in this week's Nature. 'We have bought a little time for saving species,' says scientist.
A judge on Friday gave the go-ahead to the US Army Corps of Engineers to blow an opening into a Missouri levee. Advocates say it's the best way to prevent worse flooding downriver, but residents could be affected.
For years researchers have watched plants and animals migrate to cooler quarters in response to global warming. But a new study suggests some plants are moving downhill, drawn by increased precipitation.