Trilobites: Mountain Goats on Your Trail? They Like You, and Your Urine
Mountain goats in Glacier National Park, drawn to tourist sites because of protection from bears and easy access to minerals, have abandoned some...
E.P.A. Reverses Course, Saying It Won’t Delay Obama-Era Ozone Rule
The agency said in June that states would have extra time to meet a new standard for ozone pollution. The change reverts to the date set by the...
Overweight Asian-Americans Are Seen as More ‘American,’ Study Finds
Assumptions about how much Asians and Americans weigh appears to influence perceptions of national identity.
Activists Aim to Turn Sun Belt Into Front Line on Climate
In the sweltering Sun Belt, workers laboring outdoors are wrestling with the personal and political consequences of a worsening environment.
Trilobites: Lyme Disease’s Worst Enemy? It Might Be Foxes
New data suggests the rise of Lyme and other tick-borne diseases may be tied to a scarcity of traditional mouse predators.
In Breakthrough, Scientists Edit a Dangerous Mutation From Genes in Human Embryos
Researchers have found a way to reliably remove disease-causing mutations from human embryos, an achievement sure to renew concerns over so-called...
Nations Will Start Talks to Protect Fish of the High Seas
After years of plunder, countries will begin treaty talks at the United Nations to create marine reserves in international waters.
A Freezing Swim to Call Attention to Warming Waters
Lewis Pugh, a British endurance swimmer, swam 22 minutes in the freezing Arctic Ocean to call attention to climate change’s effect on the world’s...
Blistering Heat Wave Threatens Seattle, Where Only a Third Have Air-Conditioning
Heat will engulf the Pacific Northwest this week, sending temperatures as high as 104 in Seattle and 107 in Portland, Ore.
Homeland Security to Bypass Environmental Laws in Border Wall Work
The department said it would invoke waivers to environmental laws when it begins construction of border wall prototypes near San Diego.
Islamic State and Climate Change Seen as World’s Greatest Threats, Poll Says
A Pew survey finds that while global warming is a top concern around the world, more Americans are more concerned about cyberwarfare than climate...
U.S. Nuclear Comeback Stalls as Two Reactors Are Abandoned
Two South Carolina utilities said they would halt construction on a pair of reactors, dealing a major blow to the future of American nuclear power.