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35 Pennsylvania farms will keep growing food for generations to come. Newswatch 16's Nikki Krize explains how some farms recently got some help preserving land.

>> it can protect against further brain damage. >> dr. mark rohrback developed the patent for hhs. >> how do you patent something that comes from a plant? >> we're not patenting the compound. people are free to use the compound in other ways subject to laws and other patents, so this is a method of using the compound for developing drugs to treat these types of diseases. >> like the progressive degenerative disease called chronic traumatic encephalopathy, or cte. it's caused by concussions or consistent blows to the head. >> hopefully we can intervene in the late stage of -- >> dean petkanis i...