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In an interview, Health Secretary Robert F. Kennedy Jr. cited gaps in vaccine safety research. His critics say he is ignoring a larger point: Vaccines save lives.

The United States has retreated on climate. China, the only superpower at COP30 and the world leader in clean energy, is not filling the void.

A new generation of craft chocolatiers in Brazil is making bars with "identity." They're helping to sustain the forest, too.

During the weekend, the orbits of Earth and Saturn will combine to create an interplanetary optical illusion for anyone with a good telescope and clear skies.

As some lawmakers press U.S. universities to curtail ties with China, a postdoctoral student's prosecution raises questions about how big the danger actually is.

The encoded panels' creator, Jim Sanborn, sought to unburden himself of the puzzle, and then discovered before an auction he had archived its solution in the Smithsonian.

The reorganization reflects the ongoing shift in the federal government's energy priorities: less renewable energy, more fossil fuels.

In "Doctor Dolittle's Delusion," he argued that language is a biological system unique to humans, despite the widespread belief to the contrary.

ByHeart, the maker of the product, has been linked to an outbreak of illnesses among infants that led to their hospitalizations.

New research suggests that Theia, the object whose collision with Earth is theorized to have caused the formation of the moon, came from closer to the sun.