A fragment of human jaw unearthed in a prehistoric cave in Torquay is the earliest evidence of modern humans in north-west Europe, scientists say. The tiny piece of upper jaw was excavated from Kents Cave on the town's border in the 1920s but its significance was not fully realised until scientists checked its age with advanced techniques that have only now become available. The fresh analysis at Oxford University dated the bone and three teeth to a period between 44,200 and 41,500 years ago, when a temporary warm spell lasting perhaps only a thousand years, made Britain habitable. The age...