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and how it can help our planet and soil health and environment. >> the former u.s. secretary of energy and stanford professor, dr. steven chu believes their strategy makes a lot of sense. >> why not capture it before it gets diluted, capture it and prevent its release, turn it into an energy source, which seemed to be a really good approach. >> reporter: as for the scientist, they want to make a difference. >> we need to focus on technology solutions that work. >> being in this job gives me optimism every day because i see how many exciting technologies, how many companies are coming up just like our own, and really trying to make it their mission to reduce greenhouse gas emissions in the future and have this world be livable for our kids. >> reporter: in this case, all