For the first time, scientists have shown that hummingbirds can sing and hear in pitches beyond the known range of other birds, according to research published Friday in the journal Science Advances.

The flu vaccine did a disappointing job last winter in the U.S., and officials worry that might be a bad sign for the fall.

For centuries, scientists have obsessed over a primordial blob that can shape-shift, clone itself, and live indefinitely.

A tiny fossil skull nicknamed “Wonderchicken” is giving scientists a rare glimpse at early ancestors of today’s birds. It may be the oldest known fossil from this group.

A remarkable trove of fossils from Colorado has revealed details of how mammals grew larger and plants evolved after the cataclysm that killed the dinosaurs.

What’s behind those hard-to-resist puppy dog eyes?

People with a DNA mutation that reduces their chance of HIV infection may die sooner, according to a study that suggests tinkering with a gene to try to fix one problem may cause others.

History’s most frightening dinosaur, the Tyrannosaurus rex, came from a long line of pipsqueaks.

Nearly 40 years after it was found by a monk in a Chinese cave, a fossilized chunk of jawbone has been revealed as coming from a mysterious relative of the Neanderthals.

Thanks to the compounds used to protect precious flowers, antifungal resistance is here—and it could be just as dangerous to humans as antibiotic resistance.

Preserved mummy bacteria can tell us a lot about the evolution of pathogens and antibiotic resistance.

Why your microbiome is considered an ‘essential organ’