Q: My parents have a 9-foot-by-12-foot area rug, which is in excellent condition, in their bedroom. Under the rug is green foam-rubber padding that has become as hard as a rock over the years and has ...

In the battle against the damaging effects of concussions, and with the ongoing need for better cushioning for prosthetics, new tools are always welcome. Auxetic foam is one – it expands as it’s ...