Many people have probably seen birds picking up small pieces of man-made materials, like strips of a plastic bag or paper litter, and taking them into their nest. This behavior appears to be fairly ...

This sandal woven from grasses and twigs, called an agobía, is somewhere between 652 and 696 years old, researchers say. Photograph By Sergio Couto More than six centuries ago, a resident of southern ...

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, ...