Filed under: Reviews & Products Photo: lunabar.com Green products abound, including eco-friendly energy bars. Sierra Club staffers recently blind-tasted 28 green bars to identify the Top 5 -- as well as bottom-of-the-barrel brands to avoid. No sense in forking over a couple greenbacks for an eco-bar that tastes like kitty litter. This is a taste review only. You're on your nutritional own to find out fat, protein, carbs, fiber and which bar