New fossils suggest that the earliest non-ape human ancestors may have evolved in Europe, not Africa.
Humans, as a species, may be much older than previously thought. They also may have evolved further North and West of the suspected cradle of human evolution.
Once people started settling down 15,000 years ago, a mouse species followed them indoors. The animals didn’t need people to be farming and storing food.
Giant shipworms have bacteria in their gills that produce food for them. This has made their digestive organs shrink from lack of use.
A group of endangered killer whales are exhaling disease-causing germs. Researchers worry these microbes could make the animals sick.
Rock unearthed in Canada appears to hold fossils from seafloor microbes that would have lived around 4 billion years ago, when Earth was very young.
Whether Neandertals were largely meat-eaters or vegans depended on their environment, fossils now suggest. Their teeth also indicate they used natural medicines.