The whole interview is here, online @ 5:24. It was abbreviated on the radio broadcast, in the interest of time.
From the website:
“Desert Harvesters is a non-profit, grassroots effort based in Tucson, Arizona, USA. We strive to promote, celebrate, and enhance local food security and production by encouraging the planting of indigenous, food-bearing shade trees (such as the Velvet mesquite or Prosopis velutina) in water-harvesting earthworks, and then educating the public on how to harvest and process the bounty……”
Air date: February 2015