There are some things in life that many people just don't think to question. Water wets things. Gravity sucks. And cellophane tape screams when you peel it. Unlike the intricacies of gravity , though, the screaming of tape has now been explained. A team of physicists led by Er Qiang Li of the University of Science and Technology of China used ultra-high-speed cameras and sensitive microphones to record what really happens as ordinary transparent Scotch tape peels away from glass. The answer is