About 4,000 - year-old corals? We don't know how much oil is down there."

VOA: standard.2010.06.08

That's how long it took for an international team of scientists to excavate and analyze the fossilized skeleton of a 4.4 million year old human ancestor, Ardipithecus ramidus, which was discovered in Ethiopia.

VOA: standard.2009.12.24