Okay, the World Health Organization figures one billion people do not have access to any sort of improved drinking water source.  As a result, a growing number of health issues face developing countries such as diarrhoeal disease, schistosom`iasis, trachoma, intestinal helminths (ascariasis, trichuriasis and hookworm) and hepatitis A.

So what could better than the Aquaduct is “a pedal-powered concept vehicle that transports, filters, and stores water.” Pedal to the well, fill up the tank and by the time you’re home you have 8 liters of purified water.

See here for more.