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For 14 years, scientists have been growing a tree akin to the Judean balsam -- the source of the balm of Gilead -- but with no modern counterpart.

Shuttered drugstores pose a particular threat to older adults, who take more medications than younger people and often rely on pharmacies for advice.

The artificial intelligence start-up said the new system, OpenAI o3, outperformed leading A.I. technologies on tests that rate skills in math, science, coding and logic.

The astronomical event, which overlaps with the Winter Solstice, is often overlooked because of the winter chill.

For his next trick, your cosmic correspondent for the past quarter-century will (try to) retire.

A 38-day expedition in the remote Alto Mayo region, where development threatens wild habitats, turned up one previously unknown animal after another.

The Food and Drug Administration released final rules on labeling foods as "healthy," tightening limits for sugar, sodium and saturated fat.

The U.S. provides nearly half of the aid for global health, including childhood vaccination, H.I.V. treatment and disease surveillance.

Remarkably well preserved ice age remains like those discovered recently in a yard near Scotchtown, N.Y., are rare -- but not as rare as you might think.

The agency recommended that the maker of Librela update its label to reflect the possibility of more serious adverse reactions.