It's been a year since science correspondent Miles O'Brien lost his left arm in an accident. Since then, he's been learning how to live life "mono-mano." But can technology ever replace what he lost?…

By Miles O'Brien

Ten years ago, while working as an attending physician, Dr. Carl Stevens noticed a disturbing pattern: the majority of his patients with diabetes who acquired infections requiring amputation were from low-income backgrounds, while his diabetic patients from wealthier communities rarely…

By Anya van Wagtendonk

Shock continued to reverberate throughout the country a day after the bombings at the Boston Marathon. The attacks left three people dead and more than 170 injured. Kwame Holman reports on the attack aftermath and investigation, as well as how…

Spencer Michels reports on efforts in San Francisco to design and build heavy-duty, low-cost wheelchairs for use in the rough terrain of Haiti and around the third world.