AP Photo/Rich Pedroncelli
Kristy Dahl
Kristina Dahl is a former principal climate scientist for the Climate & Energy program at the Union of Concerned Scientists.
AP Photo/Rich Pedroncelli
Kristy Dahl/UCS
Ethan Schisler/NOAA Weather in Focus Photo Contest 2015
Erlon/Getty Images
Alex Wong/Getty Images
Erlon/Getty Images
Joe Raedle/Getty Images
Scott Olson/Getty Images
Adam Michael Szuscik/Unsplash
US Forest Service, Pacific Northwest
US Forest Service, Pacific Northwest
San Bernardino County Fire/Wikimedia Commons
John Englart/Flickr
John Englart/Flickr
Stuart Rankin/Flickr
Black Rock Solar/Flickr CC by 2.0
Black Rock Solar/Flickr CC by 2.0
Garry Knight/flickr
AP Photo/John Locher, File
Ben Stansall/Getty Images
Heatwave. Maggie Lin Photography/CC BY-ND 2.0
Joe Ravi/CC-BY-SA 3.0
AP Photo/Charlie Riedel
USAF/Senior Airman Damon Kasberg