Smoke pollution from wildfires threatens the advancements the U.S. has made in cleaning its air.
Halfway through 2018, the U.S. is having its 14th warmest year on record, with the Southwest leading the way.
The global ocean conveyor belt is slowing down, impacting climate, sea levels and marine life.
Drought and deluge are both expected to be more common in a warming world. See how far off these cities are from normal precipitation so far in 2018.
See the trends in minimum and maximum summer temperatures on this map.
The number of days each year with extreme rainfall is, on average, increasing in every region of the U.S.
Februaries have warmed 1.01°C (1.82°F) globally since the first Winter Olympics in 1924.
Winter is losing its cool. See how much milder the coldest night of the year will be by mid-century.