(CNN) — Ancient, fossilized teeth, uncovered during a decades-long archaeology project in northeastern Ethiopia, indicate that two different kinds of hominins, or human ancestors, lived in the same ...

An international team of scientists unearthed a remarkable diversity of fossil eggshells in Utah's Cedar Mountain Formation, challenging long-held assumptions about the prehistoric ecosystems of ...

Strong but light, beautiful and precisely structured, feathers are the most complex skin appendage that ever evolved in vertebrates. Despite the fact humans have been playing with feathers since ...