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Oct 20, 2014 11:30 AM ET // Laura Geggel, LiveScience
One of three newly found prehistoric arm bones, likely from a Neanderthal, suggests that the individual had a muscle injury near the shoulder.
May 29, 2014 02:00 PM ET // Richard Farrell
The bacteria that cause the illness may have been lurking around for 15 million years -- long before humans walked on Earth.
Dec 16, 2013 04:30 PM ET // Charles Choi, LiveScience
A 1.4-million-year-old hand-bone fossil means the modern human ability to make and use complex tools may have originated far earlier than scientists previously thought.
Apr 9, 2013 07:00 PM ET // Jennifer Viegas
An unusual prehistoric fish with fins near its butt has helped to solve the mystery over why most animals, including humans, have paired limbs.
Mar 27, 2013 05:00 PM ET // Jennifer Viegas
A neanderthal skeleton unearthed in Italy shows interbreeding with humans, the first such known hybrid.