What’s been around since the ’70s, has more mirrors than Studio 54, and generates more heat than John Travolta dancin’-Dancin’-DANCIN’ in a polyester pimp suit? The world’s biggest solar furnace obviously.
Those Canadian lumberjacks must know a trick or two about staying warm. While gadgeteers console themselves in heated jackets and Slankets, lumberjacks were out there slapping bits of steel together to create the Bullerjan furnace. Toasty. [Bullerjan via Uncrate]
