Living on Earth: April 29, 2011

China Adopts Cap-and-Trade to Curb Emissions / LOE Lookback - It's All Happening at the Zoo / Science Note: Early Birds / Sustainable City Gardening / The Indonesia Mega Rice Disaster / Earth Ear: Maple Sugaring / **New** Big Floods, Big Explosion Along Mississippi River Learn more about your ad choices. Visit megaphone.fm/adchoices