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Michigan is investing $7.5 million to research geologic hydrogen — a clean energy source buried beneath the state that experts say could help power a transition away from fossil fuels. That’s because when hydrogen fuel burns, the only byproduct is water. There are no greenhouse gases or other harmful air pollutants emitted, unlike fossil fuels.

If used as a fuel or in fuel cells, a large store of hydrogen could help clean up the state’s high-emissions industries, such as trucking and steel as well as cement manufacturing, said Kevin Mehren, director of the Michigan Infrastructure Office. Energy production, including at natural gas plants, and transportation are the top sources of greenhouse gas emissions in both Michigan and the country at large.

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