"Williamstown Warming," the 10-minute video by Mount Greylock Regional High School students which won a national award from CSPAN, will be shown on the cable public-affairs network on Thurs., June 7, at 6:50 a.m. If you have RealPlayer installed on your computer and a broadband (cable or DSL) Internet connection you can watch it by clicking on this link: (STREAM WILLIAMSTOWN WARMING.) Or you can try downloading it and playing it offline by right-clicking HERE (you'll have to understand how to "unzip" a file). The three collaborating MGRHS students were seniors Anna Hogeland and Evan Dethier, along with junior Marichal MacDonald. CapitalNews9, the cable-news channel originating from Albany, N.Y., aired a story about the video (and one by a student at a New York school) on May 27.