Recent fossil finds could mean that "Lucy" wasn't our direct ancestor, some scientists say. Others strongly disagree.

Lucy, an early human ancestor who walked upright on two legs—a milestone in human evolution—had speed and energy efficiency limitations when it came to running. As reported by Live Science, recent ...

Headlines around the world hailed the fossils as "Lucy's Child" and "Lucy's Daughter" when anthropologists first reported finding the skull and bones of a 3-year-old girl who lived and died more than ...

Researchers believe they have solved one of the biggest puzzles in anthropology — whether Lucy, one of our famous ancestors, who existed 3.2 million years ago, lived in the trees or on the ground.

Professor Matt Sponheimer reflects in A&S Magazine on the enduring significance of "Lucy," the 3.2-million-year-old Australopithecus afarensis fossil discovered in Ethiopia. Half a century after her ...