The government space agency has vocally promoted diversity and inclusion for decades, even during the first Trump administration.

She was so successful at training dolphins that she began applying the same techniques to other creatures, including dogs — and humans.

Lifesaving treatment and prevention programs for tuberculosis, malaria, H.I.V. and other diseases cannot access funds to continue work.

Our early human ancestor was capable of running, if slowly, a new study finds.

A seismologist thinks natural phenomena could explain the Summerville Light and other mysteries around a South Carolina locale.

The case opens a new front in the battle between states that ban abortion and states that support providing abortion anywhere in the country.

Vague federal directives have led to frantic action, and perhaps overreaction, before a Friday deadline.

Robert F. Kennedy Jr. also disclosed that he had reached at least one settlement agreement with a company or individual that has accused him of “misconduct or inappropriate behavior.”

The pause affects billions of dollars and is delaying home repairs, factory construction and other projects, many in states that voted Republican.

Faced with a rash of shark deaths marked by brain swelling, Canadian and American scientists are trying to solve a marine mystery.

When a scientist received a video of a spotted hyena in the southern part of his country, he thought someone was playing a trick on him.

Around the world, other communities are experimenting with ideas that Los Angeles could borrow as it rebuilds from disastrous wildfires.

Senators had objected to the financial conflict posed by Robert F. Kennedy Jr.’s decision to retain a financial stake in lawsuits against a major drug company. It remains unclear whether any proceeds would be redirected.

A puncture in the fossilized neck of a winged reptile that flew with the dinosaurs suggests the creature became a feast for a crocodile ancestor.

Scientists studying samples that NASA collected from the asteroid Bennu found a wide assortment of organic molecules that shed light on how life arose.

The founder of SpaceX said President Trump had asked his company to return two astronauts aboard the space station to Earth “as soon as possible.” NASA said it would do that “as soon as practical.”

In the Cretaceous period, a shark or another kind of fish found sea lilies less than digestible. What you might expect followed.

If confirmed as health secretary, Robert F. Kennedy Jr. would oversee the Food and Drug Administration and other agencies that issue key decisions for drug companies.

President Trump’s decision to pull out of the international health agency could deprive the United States of crucial scientific data and lessen the country’s influence in setting a global health agenda.