Nearly 50 million acres of forest disappeared worldwide in 2015, mainly in North America and the tropics.
Changes in winds blowing in East Antarctica may be driving ice melt thousands of miles away.
With weeks left in the melt season, Arctic sea ice area is already below the annual low of the 1980s.
South Miami, Fla., has become the first city outside of California to mandate solar panels on new homes.
It's been less than a week, but the Larsen C ice shelf and the iceberg it calved are already changing.
California municipalities have filed first-of-their-kind lawsuits against fossil fuel giants over sea level rise.
Halfway through 2017, the year is the second hottest on record, even without an El Niño to help boost its temperature.
The record global temperature of 2015 is likely to become the norm by 2040, and possibly even earlier.