There are some jobs only helicopters can do. One of them: transport a pair of environmentally friendly lavatories to the top of a Japanese mountain. The ladies’ and men’s rooms are part of a shelter atop 3,280-ft Mount Daisen, a popular hiking destination some 320 mi west of Tokyo. The Japan Times reports a local government official said, “We decided to build the toilets after climbers complained the old one smelled really bad.” The new loos use biodegrading organisms to break down waste and are powered by solar cells.