Every year more than 15 million people worldwide suffer injuries and illnesses that leave them unable to walk according to the World Health Organization. But new technological advances and physical therapy could help some of them walk again. Among the most promising – is the use of robotic exoskeletons. As Erika Celeste reports, scientists at the University of Notre Dame are leading the way with their work on wearable robots that allow patients to regain some or all of their mobility.