Inside the 81-year-old billionaire’s risky, debt-fueled scramble to transform his data empire into an A.I. juggernaut.

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

© Allison Joyce/Agence France-Presse — Getty Images

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

Once united in support of President Trump, right-wing influencers are embroiled in feuds and losing viewers, creating a problem for Republicans in the midterm elections.

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.

© Rebecca Noble/Reuters

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.

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

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.

© Kenny Holston/The New York Times

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 first U.S. attempt at reopening a shuttered reactor has been held back by run-down equipment and a lack of planning.