Cullen speaks to crowd marching for sound science in Washington D.C.
Our Bernadette Woods Placky reports on COP22 from the city of Marrakech.
Sean Sublette discusses the long- and short-term implications of surpassing 2°C of warming.
This autumn was the hottest on record for continental U.S., and COP21 comes to a close.
COP21 finishes out its first week in Paris, France, and snow in Buffalo was a no-show.
You're likely to hear the term 2°C a lot during the next two weeks.
Find out on the Shum Show with Climate Central's Multimedia Journalism Fellow, Greta Shum.