2015 was the hottest year on record by a wide margin, beating the previous record (2014) by 0.29°F.
Our chief meteorologist talks glacial melt on Good Morning America.
Climate change means our seasons are warming up — all four of them.
This autumn was the hottest on record for continental U.S., and COP21 comes to a close.
You're likely to hear the term 2°C a lot during the next two weeks.
Our analysis details the implications of different warming scenarios for every coastal nation and megacity on the planet.
October 21, 2015 is the date Doc Brown and Marty McFly time traveled to in order to sort out their past, present and future lives.