Most development experts will tell you that clean water scarcity is one of the greatest obstacles to lifting people out of poverty.

    Check out this video from the winning entry of the "Innovate or Die" competition to develop a pedal powered device which has a positive impact on the environment.

http://www.cargocycling.org/ 

     Even though this isn't goint go solve the problem on its own, might not be practical or affordable or a believable solution (I really don't know enough about the product or the issue to judge), what I love about this is that it shows our potential to innovate sustainably.

More fun bike stuff here.