A Swedish entrepreneur is trying to market and sell a biodegradable plastic bag that acts as a single-use toilet for urban slums in the developing world.
Once used, the bag can be knotted and buried, and a layer of urea crystals breaks down the waste into fertilizer, killing off disease-producing pathogens found in feces.
The bag, called the Peepoo, is the brainchild of Anders Wilhelmson, an architect and professor in Stockholm.
Full story: For Pennies, a Disposable Toilet That Could Help Grow Crops