Rising H5N1 bird flu cases in the U.S. prompted the CDC to study the virus in ferrets, revealing it may have the potential to ...

Analyzing a leg bone from a fossil site in Colombia, scientists have identified a massive “terror bird” that lived about 12 ...

Emails show concerns about potential human-to-pet transmission, with cases in cats now confirmed in multiple states.

While past terror bird fossils placed the meat-eating birds at 3 to 9 feet tall, new findings suggest that some were even ...

New research is shedding light on mysterious sleep mechanisms in an unexpected source: the Australian dragon lizard.

OPINION: Avian flu, once limited to birds, is adapting to infect mammals, raising concerns about a new pandemic risk. With ...

Swine can act as so-called “mixing vessels” for human and bird flus, giving avian viruses an opportunity to adapt for spreading in people.

In Colombia, a fossil-collecting rancher has found a giant, flightless killer from 13 million years ago — and a missing link ...

Scientists assessing dangers posed to the world’s trees have revealed that more than a third of species are facing extinction ...

Extraordinarily well preserved fossils of feathered dinosaurs and other creatures got that way after being frozen in time by by volcanic eruptions, researchers have long suggested. Not so fast, says a ...

The mammals are described as effective ‘mixing vessels’ for influenza because they have receptors for both avian and human ...

Researchers including a Johns Hopkins University evolutionary biologist report they have analyzed a fossil of an extinct ...