Unless you're blind, or just plain out of the loop, you've probably noticed a proliferation of folks rocking spectacles as accessories of late, but for those of us who wear the things out of necessity, there's no taking 'em off when our lenses fog up. Lucky for us, a team of Canadian researchers have patented a new permanent anti-fog coating that they claim is the first of its kind. To make sure the stuff wouldn't wash away, the crew applied four successive layers of molecules to a transparent material (either glass or plastic) before overlaying it with