Greenhouse gases are trapping a lot of heat in the climate system and most of it is ending up in the ocean.
Every state in the U.S. has warmed since the first Earth Day, although the rate of warming varies. Check out how much it’s warmed in your state.
Nationwide, the number of days with the most intense precipitation continues to climb.
If CO2 emissions continue at the current pace, pollen counts are projected to nearly double by 2060.
This year's sad California snowpack "obliterates" the previous record low.
2015's annual maximum of winter Arctic sea ice is the lowest in the satellite record.
Spring is arriving earlier across the U.S. by an average of three days.
Just like our bodies, the climate system can become unbalanced if it gets too much of a good thing.