The zoo's Humboldt penguins moved out of their habitat after officials noticed them "interacting with materials" that could ...

The Houston Zoo's naming contest for its new baby boat-billed heron closes Wednesday. The four options, which people can vote ...

Many unexpected human artifacts have been preserved, for centuries, in vulture nests. This sandal woven from grasses and twigs, called an agobía, is somewhere between 727 and 771 years old, ...

The federal government has shut down, for the first time in almost seven years. How long will the current impasse will last is unclear, as the partisan standoff persists over health care and the short ...