How two college students created a prosthetic arm for an eight-year-old

Eight-year-old Daniel Wilson was born with a shortened arm with two fingers on the end, which isn't always the greatest when it comes to things like riding a bike and swinging a bat. So his family reached out to the Rose-Hulman Institute of Technology, where two students decided to work on the arm as part of their capstone project. The result? A red arm named Pinchy for Daniel … and a school project worth a lot more than a grade.