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President Obama pushed back against what some see as the irony of him expanding oil exploration while talking up climate change.

The report explores how climate change has, for dozens of species, disrupted ecosystems, changed where whales go, led to a decline in reproduction, and even an increase in inter-species aggression.

A group of researchers photograph a woolly mammoth tusk on the banks of the Koyukuk River in Alaska.

Mangroves help protect coastal areas from flooding and sequester more carbon than tropical forests. But new studies suggest they may be wiped out by the rise of sea levels.

Federal officials at the U.N. climate meeting are ignoring climate science and touting coal and fossil fuels. But local and state authorities pledge to reduce greenhouse gas emissions on their own.

Climate change-fueled hurricanes and sea-level rise get a lot of attention, but Mississippi River Basin communities also are experiencing the effects of global warming.

The world is set to start crucial climate change negotiations soon. To avoid extreme warming, nations have to make deep cuts in heat-trapping emissions, fast.

NPR's Ari Shapiro speaks with Todd Stern, who served as a chief climate negotiator for the Obama Administration, about what to expect as this year's climate negotiations get underway in Glasgow.

NPR's Sarah McCammon speaks with economist and demographer Dean Spears about why he thinks depopulation isn't the answer to the global climate crisis.

University scientists and former state employees say Florida Gov. Rick Scott's administration has directed them to avoid using the phrase "climate change." Scott denies the charge.