"How our oldest human ancestor was discovered--and who she was"--Cover.

“Lucy is a 3.2-million-year-old skeleton who has become the spokeswoman for human evolution. She is perhaps the best known and most studied fossil hominid of

Poppy tears, opium, heroin, fentanyl: humankind has been in thrall to the “Milk of Paradise” for millennia. The latex of papaver somniferum is a bringer of

Photographs of significant hominid fossils and artifacts illustrate an assessment of the visual proof of human evolution and the meaning of clues left by the fo