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Climate Matters: Hottest Global Year on Record

Climate Matters: Hottest Global Year on Record
Program Summary

2015 was the hottest year on record by a wide margin, beating the previous record (2014) by 0.29°F. An attribution study found that the continued buildup of greenhouse gases is the overwhelming driver for the record heat, while El Niño played only a minor role. Here's Sean Sublette with the details.