September through November marks the annual autumn journey of the winged beauties, as they make their way to winter homes in California and Mexico.
Researchers gather the first full-altitude flight data for migrating songbirds.
A new map of the Milky Way has revealed a surprising fact about the stars living in our galaxy -- nearly a third have moved far from their stellar birthplace.
For years, theories have abounded about how the first people in the New World got there, but now we seem to have a definitive answer, thanks to the miracle of DNA analysis.
Spiders can travel the world by sea, air and land, covering vast distances with ease.
Welcome to the shark highway, where rest stops include 'The White Shark Café' in the Pacific and a mid-Atlantic 'truck stop.'
Tiger sharks migrate over 4,500 miles -- and some far longer -- from the cold North Atlantic to the warm Caribbean. Continue reading →
Early Europeans and Asians looked much like they do today 5,000 years ago, except they couldn't do one thing well: drink milk.
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