At the annual National Geographic Explorer's Symposium in June of 2011, upon his return from a renewable energy surveying expedition to Nepal, Culhane demonstrated his solution to the aluminum can waste problem plaguing remote parts of the Himalayas where trekkers leave garbage that is too expensive to remove for recycling. The solution: turn them into powder while creating hydrogen and useful electricity.
http://newswatch.nationalgeographic.com/2011/06/20/how-aluminum-cans-can-power-a-village/
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