Setting a lake on fire in the winter

Sort of. The video shows researchers from the University of Alaska (Fairbanks) setting fire to methane released after they drilled a hole in lake ice.

At the University's website there is another video, to my mind equally impressive though less visually dramatic, of methane bubbling to the surface of a tundra lake. This isn't the occasional bubble like one sees at any swamp - this is massive.

More re Arctic methane hydrates and the "Clathrate gun"