In just 100 years, humans have had a significant impact on the genetic diversity of lions. "I was surprised... and disappointed," says James Derr.

Newly-discovered biomarkers can predict the probability that someone with prostate cancer will develop metastasis, including to the bone, researchers report.

Newly-discovered biomarkers can predict the probability that someone with prostate cancer will develop metastasis, including to the bone, researchers report.

The findings from a toddler’s severe infection with Shiga-toxin E. coli could help identify genetic markers and potential vaccines for the increasingly common pathogen.

The remains of Bronze Age warriors suggest lactose tolerance, or the ability to digest milk, spread rapidly throughout Central Europe.

Variation in a group of genes called a "supergene" explains why two kinds of white-throated sparrows have different levels of aggression, researchers say.

New evidence suggests that the way brains work across the animal kingdom goes back to a common source, researchers report.

The genomes of six living bat species reveals the source of some of their superpowers, including echolocation, flight, and imperviousness to certain deadly viruses.

New research clarifies the throat and belly colors of hybrid warblers. It's plumage that ornithologists have puzzled over for a long time.

All the adult Asian longhorned ticks found in the United States so far have been female. Here's why.