These teenagers made a mind-controlled prosthetic leg for their friend

Three high schoolers from Flower Mound, Texas, won a $50,000 scholarship at the Regeneron International Science and Engineering Fair for designing and creating a mind-controlled robotic prosthetic leg for one of their friends.

Here & Now's Scott Tong speaks with Samuel Skotnikov, one of the team members who designed and made the leg, and Aiden Ballinger, his friend for whom they made the leg.