Living with a missing limb is difficult, especially if keeps someone from working or taking care of their family. Krista Donaldson is CEO of D-Rev, a nonprofit that designs technology to help with certain problems in developing countries. Donaldson is working on a prosthetic knee that’s affordable and reliable.
Editor's note: You can hear more of our conversation with Krista Donaldson -- and other health experts -- in our series, "Spotlight Health." That’s in partnership with the Aspen Ideas Festival. You can see all of our programs on this page (click here).