Newsweek cover: THE FUTURE OF FARMING

A lot of poor farmers in underdeveloped countries are still farming as though it’s 10,000 B.C.

— Former U.S. secretary of agriculture Dan Glickman, now consulting with nonprofits that hope to solve world hunger.

North America's first vertical farm is in a greenhouse on top of a parking lot in downtown Vancouver, British Columbia. With a 6,000-square-foot planting area, this farm can produce 150,000 pounds of vegetables every year. See slideshow