Meet Ben Hogan, former bike mechanic turning discarded bicycles into prosthetic legs; shares free instructions online to help others recreate the design locally

A Michigan man has been turning discarded bicycles into prosthetic legs while also teaching others how to make them, all for free. Ben Hogan, a former bike mechanic and prosthetist at Mary Free Bed Rehabilitation Hospital, founded Project Bike Leg , an initiative that makes prosthetics sourced almost entirely from repurposed bike parts.