The scientists collected core samples from 25 Scots pine trees and stem discs from 54 juniper shrubs, creating paper-thin sections that they stained with special dyes. Under a microscope, normal ...

Two new studies offer insights into the evolution and development of external ears, which appear in humans and other mammals but aren't found in reptiles, birds or amphibians ...

Neurobiological emergentism” explains how sentience—the subjective feeling aspects of consciousness—developed in ancient animals that evolved the first complex neural systems.

The long-lost Omiltemi cottontail has been spotted on camera after more than a century, sparking hope for its conservation.

Paleoecologist Emily Lindsey on the wildfires that led to mass extinction during California’s Ice Age. Listen to The ...

The brush-tailed bettong once inhabited most of Australia, but these days it lives in a tiny fraction of its former range.