Early interactions with the Earth may have heated up the Moon and caused it to remelt, producing new lunar rocks and erasing old craters. 

A person in Louisiana has been hospitalized after being exposed to sick and dead birds. Meanwhile, California has declared an emergency over its growing outbreak in cattle.

Plastic particles are found in our organs, blood and even semen. But do they stay in us forever? What damage are they doing? Here are six questions scientists are trying to answer.

After learning the U.S. doesn't officially recognize the bald eagle as its national bird, a Minnesota man swooped in. This week the House passed his bill, which now heads to Biden's desk.

This year, the animal kingdom was filled with triumph, loss and new discoveries. Here is a look at NPR's top animal stories of 2024.

Granholm's statement came as the Energy Department released a long-awaited study that found U.S. LNG shipments drive up domestic wholesale prices and frequently displace renewable energy sources.

Critics warn argue that people planning to live through an atomic blast aren't focusing on the real and current dangers posed by nuclear threats.

Scientists are using the Mojave Desert to test robots for the next space age.

Tens of thousands of years ago, modern humans mated with Neanderthals. But exactly how and when that happened, and who those groups of humans were, was less known. New research adds some clues.

The Geminids are one of the best and most visible annual meteor showers, when at least 120 meteors can usually be seen per hour. But 2024 will be different, thanks to the year's final full moon.

Scientists have identified two types of brain cells in the abdomen that appear to control different aspects of digestion.

Killer whales off Mexico have developed coordinated hunting skills to take down whale sharks, adding to their reputation as the ocean's top predator.

U.S. officials decided to extend protections to monarch butterflies after warnings from environmentalists that populations are shrinking and the beloved pollinator may not survive climate change.

Arctic tundra is releasing greenhouse gases into the atmosphere as hotter temperatures melt frozen ground and wildfires increase.

The nuclear industry and big tech companies think they can solve each other's problems, but critics are skeptical the marriage can last.