IPR: Why 2015 was so toasty
Climate experts tell National Public Radio that 2015 likely will go down as the warmest year on record. The cause, they say, is a combination of climate change – caused in large part by burning fossil fuels – and the El Nino weather pattern that has warmed the Pacific Ocean this year. The report comes as nations look for ways to implement the Paris climate agreement. Listen to NPR’s full story.