Green Technology Innovations Awarded at this year's Tech Awards (CA, USA)

This Greentech Media article highlights some 'green' inventions aimed at assisting the poor. Some of the innovations awarded included: a drip irrigation system designed "for small farms that is cheap to make, easy to maintain and use water efficiently"; a solar lighting (& recharge) & mobile (boat) library; Zinc-air fuel cells (South African inventor) - "Alternative Energy Development Corp., makes zinc-air fuel cells, and recycles the byproduct, zinc oxide, for fertilizer. AEDC developed the fuel cell pack to serve low-income residents..."; and the 'Solar Ear' which is an 'inexpensive' hearing aid powered by solar power.