Can sustainable farming save Iowa's precious soil and water?

Iowa is a powerhouse producer of corn and soybeans. But all the industrial farming has come at a cost to the environment. Today, there's a growing number of farmers adopting more sustainable practices in a bid to save Iowa's precious soil and water. NewsHour Weekend Special Correspondent Mark Bittman reports as part of our "Future of Food" series, supported in partnership with the Pulitzer Center. Stream your PBS favorites with the PBS app: https://to.pbs.org/2Jb8twG Find more from PBS NewsHour at https://www.pbs.org/newshour Subscribe to our YouTube channel: https://bit.ly/2HfsCD6 Follow us: Facebook: http://www.pbs.org/newshour Twitter:   / newshour   Instagram:   / newshour   Snapchat: @pbsnews Subscribe: PBS NewsHour podcasts: https://www.pbs.org/newshour/podcasts Newsletters: https://www.pbs.org/newshour/subscribe