It’s nearing the end of my 11-day Egypt experience, and there’s always something new to see. It’s easy to sit on the deck of the sleek Viking river ship—one of six in the cruise line’s Nile fleet—and ...

Palynologists who study tiny pollen fossils share 4 stories found in grains that fell hundreds to millions of years ago.

An invasive species on Socotra, free-roaming goats devour saplings before they have a chance to grow. Outside of ...