Despite munchies, frequent cannabis users are leaner and less likely to get diabetes: study

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This undated electron microscope image made available by the U.S. National Institutes of Health in February 2020 shows the Novel Coronavirus SARS-CoV-2, orange, emerging from the surface of cells, green, cultured in the lab.

A woman taking a Memorial Day weekend stroll on a California beach found something unusual sticking out of the sand: a tooth from an ancient mastodon.

Deep in an open coal mine in southern Greece, researchers have discovered the antiquities-rich country's oldest archaeological site, which dates to 700,000 years ago and is associated with modern humans' hominin ancestors.

The find announced Thursday would drag the dawn of Greek archaeology back by as much as a quarter of a million years, although older hominin sites have been discovered elsewhere in Europe.