A U.F.C. fight on President Trump’s birthday will now double as a capstone for Paramount’s successful effort to secure Justice Department approval for a mega media merger.

The company said on Friday night that the federal government had ordered limits on its Mythos and Fable 5 A.I. systems, citing national security concerns.

An eminent fossil hunter takes the reins at the National Academy of Sciences in a turbulent moment for American researchers.

More than 100 planned wind farms in 21 states are now stalled indefinitely as the Pentagon delays military reviews once seen as routine.

More than 100 planned wind farms in 21 states are now stalled indefinitely as the Pentagon delays military reviews once seen as routine.

© Brandon Thibodeaux for The New York Times

The amount of oil and fuel stored by businesses and governments has fallen sharply since the start of the U.S.-Israeli war against Iran.

© The New York Times

As the midterm elections approach, many leading Democrats are rethinking their approach to climate change.

As the midterm elections approach, many leading Democrats are rethinking their approach to climate change.

© Anna Moneymaker/Getty Images

President Trump touched on what is an increasingly hot topic in Washington: how average Americans can get a piece of the tech industry’s A.I. windfall.

Months after Australia banned social media for everyone under 16, the British government is considering new policies to keep children safe online.

The Netherlands blocked a U.S. company from buying a Dutch firm that handles its national ID system, saying it would create a “threat to the public interest.”

Mr. Bankman-Fried is serving a 25-year prison sentence for fraud related to the collapse of his cryptocurrency exchange, FTX.

Brendan Carr, the chairman of the Federal Communications Commission, has greenlighted regulatory requests for the company’s Starlink satellite internet service and lavished praise on its chief executive.

The Iran war is pushing countries to prioritize domestic energy in order to protect themselves from volatile oil and natural gas markets.

The Iran war is pushing countries to prioritize domestic energy in order to protect themselves from volatile oil and natural gas markets.

© Jes Aznar for The New York Times

An auction to drill in the Arctic National Wildlife Refuge ended with just 10 percent of the available land claimed for oil development.

© Christopher Miller for The New York Times

An auction to drill in the Arctic National Wildlife Refuge ended with just 10 percent of the available land claimed for oil development.

The forthcoming order echoes President Trump’s decision to repeal executive orders that have protected other public lands from vehicles for decades.

The president announced a total of $700 million in federal money to reinvigorate the domestic coal industry, which has been in decline for decades.

© Evelyn Hockstein/Reuters

The president announced a total of $700 million in federal money to reinvigorate the domestic coal industry, which has been in decline for decades.