Experts have been puzzled by recently discovered fossils from the hand of an extinct human relative, Paranthropus boisei.

A programmable metamaterial finger can lock into four positions without electronics. A simpler, more functional future for ...

When people sit down for a meal, they don’t think about what to do with their hands when eating. It’s just second nature. Yet, their hands are constantly adapting posture and grip to the cutlery, food ...