In the depths of the Hoyo Negro pit 180 feet below sea level, a diving team has successfully recovered the skulls, jaw bones, ...
Inside, between rows of incubators and microscopes, Beth Shapiro and her team are attempting a feat straight out of science ...
A set of footprints impressed in clay in the Honseca Cave (Velilla del Río Carrión, Palencia), which were made by cave bears ...