Thousands of fossils from the La Brea tar pits in California show no signs of mammals and birds evolving in response to ...

Researchers analyzed fossils and DNA to get a big-picture view of sloth evolution and determine what drove their immense size ...

In 1984, an amateur paleontologist in Scotland found a remarkable specimen: a nearly complete fossil of what looked to be a ...

A new study suggests two fossil trackways found in Australia were made by an early amniote, a group that today includes ...

Cold-adapted animals started to evolve 2.6 million years ago when the permanent ice at the poles became more prevalent. There followed a time when the continental ice sheets expanded and contracted ...

By combining data on all known bird species, this tree is the most impressive snapshot yet of one of Earth’s most awe-inspiring classes of animal.

Breakthrough study reveals how woolly mammoths and Arctic animals evolved their cold-weather superpowers over 3 million years ...

These tasks seem completely irrelevant to these animals in their natural environment, so why are researchers interested in ...

Also known as selective breeding, artificial selection is the human-guided cousin of evolution by natural selection. Instead ...

Iliza Shlesinger broke into the comedy world in her early 20s with razor-sharp observations about dating, singlehood, and the ...

From river-clogging plants to disease-carrying insects, the direct economic cost of invasive species worldwide has averaged ...

The footprints of a reptile-like creature appear to have been laid down around 356 million years ago, pushing back the ...