Flu expert says bird flu virus may be spread by infected feces blowing in the wind. Dr. Michael Osterholm is a medical ...

This week, meet a big-brained ancient human relative, hear a meteorite as it lands on Earth, spot a tiny kangaroo-like marsupial, and more.

Researchers say they have identified a new species of ancient hominin, Homo juluensis, that could help solve another big mystery of human evolution. Their proposal is sparking debate in the scientific ...

South American megafauna, from giant sloths to camel-like creatures, survived thousands of years longer than we thought, ...

H5N1 avian influenza continues to spread amid commercial and backyard poultry, and additional cases have been reported in ...

There's nothing like the peace of hugging your dog after a long day—those affectionate nips and cuddles seem to heal ...