For the millions of people in the world who don't have access to modern sanitation, human waste and the subsequent health issues are a big problem. So, researchers with the University of Colorado Boulder have used technology to develop an unconventional solution: a solar-powered, waste-cooking toilet.
OK, let us explain. It's a self-contained, waterless toilet. It uses parabolic mirrors to capture sunlight and focus it on a small spot on a quartz glass rod. It is transferred to bundles of fiber optic cables, which can produce a total of about 700 watts of energy.
All that energy is used to heat solid and liquid wastes to temperatures that effectively disinfect it. Pretty neat. The leftover product is something called biochar, a charcoal-like material which can then be used as fuel or fertilizer.
More: The Makers of This Solar-Powered Technology Want to Eliminate a Global Sanitation Issue