Six years ago, Richard Vargas lost his hands in a dynamite explosion - a common occurrence in Bolivia, where the explosive is so prevalent a senator once suggested declaring it a national heritage. When he woke up two weeks later in hospital, Vargas began facing the same difficulties as many other amputees - he lost his job as a metal worker, struggled with meeting the bills and faced social discrimination. Now, he wears two hyperrealistic prosthetic hands which allow him to walk around unnotice