Like a proud cat leaving a bird on its owner's doorstep, orcas—also called killer whales—may sometimes offer to share their ...

MailOnline has asked the experts what the world might look like if the Neanderthals and Denisovans hadn't gone extinct.

Dubbed Homo luzonensis, the species is one of the most important finds that will be out in the coming years, one scientist predicts. By Michael Greshko and Maya Wei-Haas April 10, 2019 ...