Each year, graduates from London's Royal College of Art--the U.K.'s preeminent art school--show off projects at the SustainRCA Show. The idea is to give the spotlight to innovative concepts and prototypes that will help us as we hurtle toward a warmer, more crowded, energy-hungry world. Pretty much anything pre-apocalypse (or maybe even post-apocalypse!) is fair game. You can read more about the show here, and we've put together seven awesome projects for your perusal, including a hand-powered washing machine, a landmine-removal kit, and more.