Description given on Youtube:
Perennial grains–one of the largest innovations in the 10,000 year history of agriculture–could be here in the next two decades, according to scientists from Washington State University and other institutions writing in the current issue of Science. The crops, which reestablish themselves every growing season, can be raised with less fertilizer, herbicide, fuel, and erosion than grains planted annually. They’re particularly promising as half the world’s growing population lives off marginal land at risk of being degraded by annual grain production.