produce food while consuming less. >> yes. >> reporter: the success of the cross breeding will take years to measure. in california, sinton took us on horseback to see his family's plan b. >> a vineyard is a great source of revenue and it's a low user of water. >> reporter: in 1972 sinton's grandfather set aside 120 acres to grow and sell grapes to wine-makers. today the family produced their own. >> this is a 2019. >> reporter: delicious. do you ever see your plan b taking over your plan a? >> no, because the purpose of plan b is to generate revenue to sustain plan a. >> reporter: ramping in america has always been a profession of faith. >> we're stewards of the land. o take ingenuity to preserve this american way. what happens with livestock and the earth. for "eye on america," jonathan vigliotti, cbs news, paso