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

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.

Defense Secretary Pete Hegseth's call for a "High-T military" raises questions about testosterone's effect on aggression in some men.

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.

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 Kentucky Republican has accused Dr. Anthony Fauci of funding research that triggered the Covid pandemic and lying about it to Congress -- charges Dr. Fauci denies.

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.