"One of the individuals - a little boy actually - ...had three copies of Chromosome 21. So, he would have had Down syndrome. And, yeah, that was unexpected and quite a moving little glimpse into the world of somebody with a disability in the very, very deep past," Cassidy said. The research team puts the discovery at between 4,000 and 6,000 years old, making it the oldest known case of Down's Syndrome in the world... "What we do, basically, is we powderise that [the petrous temporal bone in the inner ear] and we put the powder in solution and try...