An Eastern Lowland Gorilla infant

When Endangered Wildlife Gets Inbred

The endangered eastern lowland gorilla populations are now so small that the species is facing a new threat: loss of genetic diversity.
Restoration of Burgess Shale fossil arthropod Waptia fieldensis

Meeting Earth’s First Animals at the Burgess Shale

The Burgess Shale is a huge deposit of unique fossils that reveals records of the middle Cambrian, a vital period in evolutionary history.
Sika stag deer staring at camera

The Surprising Frequency of Interspecies Mating

Sometimes different but related species can reproduce. When two different species successfully mate, the resulting offspring is called a hybrid.
altruistic marmot

Why Do Animals Share?

Natural selection should weed out the do-gooders and leave only egoists, but animals share just the same.
European Starlings

What If We Had All the Birds from Shakespeare in Central Park?

According to birding lore, two of America's most invasive bird species were introduced by a misguided Shakespeare fan named Eugene Schieffelin.

Sex and the Stegosaurus

How do you sex a Stegosaurus? Look at its back plates.

Mary Anning and Other Forgotten Female Fossilists

The accomplishments of Mary Anning and other early female fossilists, geologists and natural historians