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Sewage pools, both livestock and human, are a major but hidden source of methane and other heat-trapping gases in the atmosphere. Covering those pools, and channeling those gases to productive use, is not a big technical challenge, but making it happen in the real world has been difficult. While ideologically-driven environmentalists struggled to sustain a business, Dennis Shanklin pragmatically responded to the marketplace and developed solutions that worked. He was drawn to hard problems, and solved most of them. In overcoming a variety of macro- and micro-economic challenges - at one point sales were so poor that he mortgaged his house - he built a company and set an example of practical environmentalism that can inspire entrepreneurs in many areas of society. This is his story.
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