Plowed Under

High crop prices and unlimited crop insurance subsidies contributed to the loss of more than 23 million acres of grassland, shrub land and wetlands between 2008 and 2011, wiping out habitat that sustains many species of birds and other animals and threatening the diversity of North America's wildlife, new research by Environmental Working Group and Defenders of Wildlife shows. Of the 23.7 million acres, more than 8.4 million were converted to plant corn, more than 5.6 million to raise soybeans and nearly 5.2 million to grow winter wheat.