More than two-thirds of mammals in Africa and the Arabian Peninsula went extinct during the Eocene-Oligocene transition some 30 million years ago, a study finds.
Nearly 50 years after its development, only a handful of creatures have passed the self-awareness exam. A new attempt with fish highlights a debate over the test’s use and meaning.
A mutation in an ethanol-metabolizing enzyme arose around the time that arboreal primates shifted to a more terrestrial lifestyle, perhaps as an adaptation to eating fermented fruit.
In Chapter 3, "On the Inebriation of Elephants," author Robert Dudley considers whether tales of tipsy pachyderms and bombed baboons have any basis in scientific truth.
Re-examination of a thigh bone from one of the earliest putative hominins could impact scientists’ understanding of the origins of human bipedalism, a study suggests.