The U.N. climate conference in Paris was supposed to end Friday, but negotiators have extended it for at least another day. NPR has the latest from Paris.
Is renewable energy worth the cost? This is a question being debated in Paris this week. Though there's no simple answer, in South Africa the verdict is in.
The National Park Service is weighing a Texas company's proposal to do seismic oil testing in the Big Cypress National Preserve. But some worry it will open the door for fracking in the Everglades.
NPR's Ari Shapiro talks to Rachel Kyte, special envoy for climate change for the World Bank, who explains the push-pull between rich and poor countries over financing measures to stop climate change.
Climate scientists say global emissions of carbon dioxide seem to have dipped a bit in 2015, though the world economy is still growing. China's reduced use of coal may be the main reason.
Rep. Lamar Smith of Texas is formally investigating a recent study on global warming. Smith calls the timing of the study's publication "suspicious," but many scientists call his tactics "bullying."