I can barely remember when we all put those silly plastic sheets on our cellphone screens to protect them. I dumped them because they mute the fine colors of an iPhone screen, and not because, as I know you are thinking, I couldn't get the plastic on straight. Nope, that wasn't it. Really. Now the fine researchers at the University of California, Riverside have developed a polymer that heals itself. They rolled out their findings at this week's National Meeting & Exposition of the American Chemical Society. The thought is this stuff could be on the market by 2020. And if you are the type of person who drops your phone, crashes it into doorjambs, sets it facedown on rocks or let your dog run over it, you'll be glad to know you could rip this material in half and it would fix itself in 24 hours. The researchers said earlier versions of this type of material had problems with humidity and condensation, but they are working on that. Read more