What for decades looked like a remarkable woolly mammoth discovery in Alaska has turned into an even stranger scientific mystery. Researchers say fossilized backbones — not a complete skeleton — ...

Dogs have been in the Americas for more than 10,000 years. They were already domesticated when they came from Eurasia with the first people to reach North America. In the coastal parts of present-day ...

There was a time, not so long ago in geological terms, when the forests of New Zealand shook under the weight of something enormous. The moa, flightless, featherless on its neck, standing taller than ...