Business Green: Environmental groups have used Google’s 3D mapping tool to define areas in the western US that should be off-limits for renewable energy development. The Natural Resources Defense Council (NRDC) and the National Audubon Society have collaborated on a KML file – a format native to Google Earth – which visually maps out areas of the western US that cannot be used. They have also added extra data layers to include crucial wildlife habitats that are not yet legally protected but would not …