This piece was originally published in Grist and appears here as part of our Climate Desk Partnership. Bobby Wright says the seed of the idea was planted about a year and a half ago when he and his dad, Bob, were out on his grandparents’ ranch in Carter County, Oklahoma. Wright’s grandfather, Troy Lewellen, once grew pecans and raised cattle on the ranch, but at 83, he was retired and wanted to tie up any loose ends in his affairs.