Fifty years ago today, a groundbreaking discovery was unearthed in Ethiopia, the fossilized bones of a human ancestor, and you probably already know her name... (SOUNDBITE OF SONG, "LUCY IN THE SKY ...

Paleontologist Yves Coppens died on Wednesday at the age of 87. Coppens is known for his 1974 discovery of "Lucy," one of the oldest-known human ancestors. The 3.2 million-year-old bones provided ...

ADDIS ABABA (Reuters) - Ethiopians worried on Tuesday that the fragile bones of their world-famous skeleton -- the remains of a more than 3-million-year-old female hominid known as "Lucy" -- may not ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Lucy, a fossilized ...