pedal powered tools
Maya bike , in Guatemala usiing pedal power to improve lives..
Image: https://tse3.mm.bing.net/th?id=OIP.HNEyH8D4uSuv8rY0kBkOkQEyDM&w=248&h=165&c=7&o=5&pid=1.7
Image: http://www.greatenergychallengeblog.com/intelligenttravel/files/2010/06/mobile-water-pump-thumb-520x3871-480x357.png