Nearly 50 million acres of forest disappeared worldwide in 2015, mainly in North America and the tropics.
With weeks left in the melt season, Arctic sea ice area is already below the annual low of the 1980s.
It's been less than a week, but the Larsen C ice shelf and the iceberg it calved are already changing.
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.
A new report shows that greenhouse gases' influence on the climate has increased 40 percent since 1990.
Flight delays and restrictions could become more common as temperatures rise due to climate change.
A new, interactive map shows where studies have found a discernible role for warming in extreme weather events.