ZEROING IN: CARBON NEUTRAL 2050

Now on the menu: traditional beef, grass-finished beef, soy meat and possibly sometime soon even lab-grown meat. Thanks to a growing awareness of sustainability, more and more people are seeing how food choices have an impact not only on their health, but also on the health of the planet. We'll meet the ranchers, dairy farmers and food entrepreneurs who are exploring new ways to satisfy our appetite while cooling down our sizzling Earth. Host: Catherine Kobayashi. Guest: Greg Dalton, Journalist and Host, "Climate One".