Evolution

New fossils and analyses of ancient ocean chemistry reveal the surprisingly deep roots of the Cambrian explosion

New research shows that primate calls deter predators in the wild 

Researchers combined laboratory and simulated experiments on 3-D-printed wings to find the ideal wing shape

The now-extinct animals once lived from Florida to Alaska, and weighed as up to 100 kilograms

Why dolphins, seals and other animals developed the capacity to sleep with half their brain awake

Birds are living dinosaurs, but can they help us understand how their extinct relatives moved?

Some wild female bonobos introduce their sons to desirable females—then make sure their relations won’t be interrupted by competing males. Karen Hopkin reports. 

Are they the first animal embryos? 20 years post-discovery, these and other fossils from the 600-million-year-old Doushantuo Formation remain frustratingly enigmatic

A study found that only a small percentage of bird beak shape variation is dependent on diet, with other factors like display and nest construction probably playing parts too.

A new study offers a surprising look at what happened when fishy fins evolved into arms and legs

Chewing gums discovered in western Sweden contain the oldest human DNA found in Scandinavia. Christopher Intagliata reports.

Frances Arnold, the Caltech scientist who shared the 2018 Nobel Prize in Chemistry, says evolution can show us how to solve problems of sustainability.