Several mechanical engineering students are part of a team from Purdue University that has designed a new type of prosthetic leg for a 5-year-old boy who has a rare birth defect. The leg uses an innovative gearbox design that enables the prosthesis to move like a real leg.

Millions of flat-screen monitors and television sets will soon become obsolete, posing environmental hazards, and Professor Fu Zhao is part of a team of Purdue University researchers who are developing tools to help industry efficiently recycle the products.

People can let their fingers - and hands - do the talking with a new touch-activated system that projects onto walls and other surfaces and allows users to interact with their environment and each other.