Last May 2010, I wrote about a company called Catapult Design:

"Since the majority of the world's population lacks access to life's basic needs, Catapult Design, a humanitarian design firm, develops and implements human-centered products to help them thrive. 

For instance, the wind turbine pictured here provides enough energy to power a car battery, which would give families without access to electricity a safe way to light their homes, cook food and make contact with those around them."

I revisited their site recently and they have grown since last year and are involved with many other wonderful innovative projects from field-testing prototypes of handcarts in Tanzania to harvesting rainwater or building solar powered health clinics. To learn more, please go to their site: catapultdesign.org