Wow. This video from CNN (via Timbuktu Chronicles) shows the impact of sustainable lighting on communities that really need it due to limited resources. Evans Wadongo from Kenya has introduced solar-powered LED lights to rural families with no access to electricity. The money that they would have spent on kerosene for lamps can now be spent on food.
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This is a wonderful application of LED lights because they require so little energy to work, which the sun in Kenya can easily provide with minimal solar paneling. Now little kids there can study through the night and pursue higher education, and eventually give back even more to their communities. Green sustainable lighting WIN!