Non-GMO Project Verified has become the fastest growing food eco-label in North America, as sales of certified products hit $1bn in 2011, according to findings unveiled at Organic Monitor’s Sustainable Foods Summit in San Francisco last month. The $1bn figure is from SPINS, a market research and consulting firm for the Natural Products Industry. However, it does not include foods sold at Whole Foods or Walmart, so is likely to underestimate the total sales figure by a wide margin – especially considering that Whole Foods’ 365 private label range is Non-GMO certified.