“The Reign of Wolf 21” is the true love story of an alpha pair who lead their Yellowstone pack with grace, courage, and an unbreakable bond. What these wolves can teach us about love, loyalty, and leadership. Also, our global food system feeds environmental crises like global warming and water pollution even as it fails to adequately feed billions of people worldwide. So in the 50th anniversary edition of “Diet for a Small Planet,” author Frances Moore Lappé renews her calls for a plant- and planet-centered food revolution for the sake of climate, health, and democracy. And in some Native cultures four more crops join the “Three Sisters” of corn, beans, and squash. The “Seven Sisters” and the importance of saving Native seeds.  Join the next Living on Earth Book Club event on December 9th at 6:30 p.m.! We'll be speaking with diver-filmmaker Craig Foster about his book Underwater Wild, which captures the underwater world of wonder seen in the Academy Award-winning documentary “My Octopus Teacher.” Register at loe.org/events Learn more about your ad choices. Visit megaphone.fm/adchoices