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Elon Musk wants to launch a million satellites, but researchers say global warming is changing the upper atmosphere in ways that makes space junk linger.

The Trump administration is proposing Obamacare plans that it says will lower health insurance premiums. But critics warn they would make care unaffordable.

Thirty seals, primarily weaned pups, have died since late last week, scientists said.

The president said he had negotiated a deal with tech giants to cover the energy costs of data centers, but offered few details. Experts said such pledges could prove difficult in practice.

Some butterfly species can't grow unless they trick ants into taking them home with a complex rhythmic signal.

Steve Pearce, President Trump's nominee to lead the Bureau of Land Management, is set to face a Senate hearing on Wednesday.

The Nobel laureate Richard Axel is not accused of wrongdoing but called his association with Jeffrey Epstein a "serious error in judgment."

New findings about the anatomy of the dinosaur age's fiercest predator suggest it chased prey "like an oversized bird."

In an era of overt sexism in the sciences, she made two major discoveries, including identifying a neuropeptide later linked to chronic pain syndromes and migraines.

We talk to the author of a new book about why the problem is so hard to solve.