A team of scientists discovered some fossil teeth and bones in Ethiopia.
They claim the jawbone with teeth, hand, arm, and foot bones indicate that the 5.8 to 5.2 million years old bones are from a pre-historic human called Ardipithecus.
The teeth they found look like hominids' teeth and have never been found in apes. Yet, there's no evidence that the Ardipithecus walked. To find this out further examination, particularly of the pelvic bone, is required.
The new find is disturbing because another group of scientists just claimed to have found the oldest human, the Orrorin in Kenya. It's not clear, how these two finds relate.
It's also surprising that they lived in the forest and not in the savannah.