Wirth first became involved with climate change activism through his friendship with another early believer, Carl Sagan.
National Oceanic and Atmospheric Administration (NOAA)
Far from the East Coast, scientists, first responders and more from Colorado are playing an important role in helping with Hurricane Florence preparedness and recovery.
What's going on with El Niño now can influence how much snow Colorado gets further down the line.
Research from atmospheric scientists in Boulder finds that personal care products can create emissions off your body at a level on par with your car’s tailpipe.
“This is the most surprising and unexpected thing that I’ve observed in 27 years of making these measurements,” researcher Steve Montzka says.
The announcement comes a day before a Paris gathering called the "One Planet Summit" co-hosted by the U.N. and the World Bank.
Scientists say the ozone hole over Antarctica is no longer growing, the expectation is that it will take decades to recover.
The National Climate Assessment is mandated by Congress every four years; it was written by scientists from 13 federal agencies.
“Most of us never thought we would see a time when basic monitoring would be something that could be on the table in terms of cuts,” said INSTAAR director Jim White.