Biophysicist Dr. James Till co-discovered stem cells, sparking a medical revolution

Canadian biophysicist James Till, who changed the future of medicine by proving the existence of stem cells with cell biologist Ernest McCulloch, was, by all accounts, a man of rare scientific rigour. If there’s any doubt, consider his pioneering research at the curling rink.Dr. Till loved curling, or, as he liked to call it, “chess on ice.”