In this 4.4-million-year-old skeleton, scientists may have found the missing step between climbing and walking.
Katie Uhlaender's attempt to become the first American woman to make six Olympic skeleton teams faces a setback. She didn't ...
ETH Zurich scientists 3D print muscle tissue in simulated zero gravity, paving the way for growing human tissue in space.
Experts have been puzzled by recently discovered fossils from the hand of an extinct human relative, Paranthropus boisei.