Science

For a few months last fall, a school-bus-size space rock named 2024 PT5 gained fame as Earth’s new “mini-moon.” Astronomers rushed to study the object while it was still close enough to...

A study of more than 30,000 British adults diagnosed with attention deficit hyperactivity disorder, or A.D.H.D., found that, on average, they were dying earlier than their counterparts in the general population —...

We set out again at sunrise, and soon arrived at a mud pit in a hillside. There an industry had emerged in pushing and pulling vehicles up and down the hill. There...

A former chemical-industry executive who fought against stronger regulations under the first Trump administration is returning to take a critical role at the Environmental Protection Agency, raising concerns of corporate influence on...

Corals come in a wide array of shapes, sizes and colors, and they build sprawling reefs that serve as refuges for vast amounts of biodiversity in the ocean. But they are not...

With hornlike facial fins and diamond-shape bodies that can stretch nearly 30 feet across, manta rays are among the strangest fish in the sea. Yet these behemoths’ most puzzling feature is a...

During his Inaugural Address on Monday, President Donald J. Trump again promised to launch American astronauts to Mars.Seated nearby, Elon Musk, a political benefactor of Mr. Trump who founded SpaceX in the...

President Trump launched a broad attack on the wind power industry in the United States, with a sweeping executive order that could block not just new offshore wind farms in the Atlantic...

Parents and their children, or people who know each other well, often share some expression that is unique to them — a phrase or gesture that began by happenstance but gradually acquired...

President Trump moved quickly on Monday to withdraw the United States from the World Health Organization, a move that public health experts say will undermine the nation’s standing as a global health...