Jérôme Dupras is a member of one of Quebec’s most popular folk rock bands. Now, as the province’s chief scientist, he will help shape its environmental destiny.

The Biden administration took steps to shield workers from extreme temperatures. The Trump administration is taking a gentler approach with employers.

After working for a department store, she switched to archaeology and made important discoveries about prehistoric clothes and gender roles.

A federal plan would impose drastic water cuts on Arizona, California and Nevada in dry years over the next decade. A legal battle could follow.

Flaming chunks of metal crash into homes, farms and parking lots. Who’s to blame? And who pays for the damage?

The geometric earthwork structures, carved into the ground with embankments and ditches, are in some cases more than 2,500 years old, researchers said.

Scientists have found smallpox viruses in the remains of people in Chile from around 500 years ago, revealing how the virus may have evolved into a global killer.

A new policy raises questions about testosterone’s effect on aggression in some men.

Cincinnati wants to take in people fleeing climate disasters. Plus, the latest on fires in Europe.

A spacecraft meant to push NASA’s Swift Observatory to a higher orbit malfunctioned and started tumbling several days ago. Engineers think it can still succeed.

Scientists in Mexico were the first to perform ultrasounds on giant manta rays to detect pregnancies. The researchers hoped to learn more about the life cycle of the largest ray species in the world.

Hundreds of bases are contaminated with PFAS, which are linked to low birth weight and other risks. Politicians from both parties are demanding explanations.

The end of July brings the Alpha Capricornids and the Southern Delta Aquarids, both of which will be most active on Thursday night into Friday morning.

Researchers at Caltech and Sophia Space, a start-up, have developed a technology using solar power to prevent computer equipment from overheating in orbit.

In the latest example, the Energy Department will convert a shuttered Cold War-era uranium enrichment facility into a data center campus and gas plants.

The state is a major importer of fracking wastewater, which gets pumped underground but doesn’t always stay there. The city of Marietta is fighting back.

Senator Rand Paul said the committee he leads would vote next week on whether to hold Dr. Fauci in contempt of Congress.

Daniel Blumstein, a professor of ecology and evolutionary biology at U.C.L.A., faced a funding issue amid federal cuts to scientific research. To raise money for its marmot research, his team started “OnlyMarms,” a free, G-rated account of cute videos that collects money through tips.

A German scientist, he developed a process for turning corpses into posable figures. His shows drew millions of visitors, and many detractors.

I didn’t want to have to depend on a weather app to know when the storms are coming.