This week on Sierra Club Radio: 1) Jared Duvall on his new book Next Generation Democracy: What the Open-source Revolution Means for Power, Politics, and Change 2) Deborah Eden Tull, author of The Natural Kitchen, gives tips for a sustainable kitchen 3) Avital Binshtock, Sierra Magazine's green lifestyle editor, on their latest review of eco-friendly toothpastes 4) Green cuisine tips from Annie Somerville, Executive Chef of Greens Restaurant.