A New Danger at America’s National Parks
Extreme heat is making it harder for rescue helicopters to take off.
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Roger Kisby / NYT / Redux Triple-Digit Highs Can Be Misleading
A single number can’t capture extreme heat.
Illustration by Matteo Giuseppe Pani. Source: Getty. Drones Could Unite Ranchers and Conservationists
Flying robots could offer a nonlethal way to keep wolves away from cattle.
Illustration by Matteo Giuseppe Pani. Source: Getty. An Unlikely Source of Greenhouse-Gas Emissions
Wildfires are making the Alaskan tundra leak methane.
Matt Snyder / Alaska Division of Forestry / NYT / Redux Earthen Rivers Are Flowing Through the West’s Scorched Forests
After wildfires come devastating landslides.
David Ryder / Reuters What Happens When the Heat Repeats?
Two years later, the intertidal zone of the Pacific Northwest coast is still recovering from a devastating heat wave.
T.O.K. / Alamy Even North America’s Elk Have Regional Dialects
Why do Pennsylvania elk sound different from Colorado elk?
Tayfun Coskun / Anadolu Agency / Getty This Lawsuit Could Change How the Forest Service Fights Wildfires
Fire retardant is toxic to fish. An Oregon nonprofit is arguing that it shouldn’t be used at all.
Jen Osborne / Bloomberg / Getty Wildfires Quietly Threaten a Crucial Water Source in the West
Snow is melting earlier in fire-ravaged areas, with potentially disastrous consequences.
Michael Ciaglo / Getty The Call That Could Save a Farmer’s Life
Droughts, pests, and slim margins threaten farmers’ mental health. To help, five states are piloting a unique hotline.
RJ Sangosti / The Denver Post / Getty
