Image: Italy's Mount Etna spews lava

One of the world's most active volcanoes, Mount Etna, erupted on Sunday—spewing lava and clouds of ash high over the Mediterranean island of Sicily. This image, captured on 13 November by the Copernicus Sentinel-2 mission, ...

Is fear of sharks being overblown?

"Just when you thought it was safe to get back in the water...." It's one of the most famous taglines in film history, immortalizing sharks as ruthless predators. But beyond the horror generated by Spielberg's "Jaws" series, ...

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