Observing the climate is sometimes as easy as paying attention to what's going on outside, and people have been doing it for centuries.
Senators say United Nations Framework Convention on Climate Change treats Palestine as a state, and U.S. law bars any expenditures.
An early start date would lock a U.S. president into the deal for four years.
South Florida Mayors ask Marco Rubio for help on climate change
Fixing old diesel cars is a waste of time and money, the letter reads. Make clean cars instead.
Paris should come up in tonight's debate, if only to ask Republicans about the backlash to their proposal to pull out of the deal.
Oceans produce most of the oxygen we breathe, and they are threatened by climate change.
An estimated 200 million people may be displaced by 2050. So far there's no plan to help them.
A translation of diplomat-speak to commoner language, focusing on why everyone's in Paris and what it all means.
The two-week COP21 United Nations climate change conference began Monday.
Guests include Elton John, Jon Bon Jovi, Florence + The Machine, Morgan Freeman and Ryan Reynolds.
Factors like tree cover, temperature and the rugged terrain shaped how different our languages sound, according to new research.
NOAA's winter outlook suggest things are going to get worse for the parched Pacific Northwest states.
It depends what you mean by "cure." And what you mean by "drought."