Video: Melting glaciers

Glaciers across the globe have lost over nine trillion tons of ice in half a century. How will glaciers look over the coming decades? "It all depends on what humans are doing now in terms of greenhouse gas emissions:" this ...

Biggest jump ever seen in global warming gases

(AP) -- The global output of heat-trapping carbon dioxide jumped by the biggest amount on record, the U.S. Department of Energy calculated, a sign of how feeble the world's efforts are at slowing man-made global warming.

The biodiversity crisis: Worse than climate change

Biodiversity is declining rapidly throughout the world. The challenges of conserving the world's species are perhaps even larger than mitigating the negative effects of global climate change. Dealing with the biodiversity ...

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