Heroic Hugh Herr enjoys nothing more than scaling a cliff – even though both his legs were amputated after a disastrous climbing expedition when he was a teenager.
As if conquering a 200ft rock face wasn’t hard enough, one of his prosthetic legs fell off during his latest climb – but he calmly waited for it to be roped back up to him before making it to the top.
Mr Herr runs a lab making bionic legs at Massachusetts Institute of Technology, and insists artificial limbs are an advantage.