NRDC has used Google Earth to analyze lands and resources protected by local, state and federal regulations, determining which areas are best kept off limits to energy development. These areas are grouped into three categories: * Prohibited: Energy development is off limits by law or policy. These areas include national parks, wildlife preserves and more. * Restricted: Energy development is limited by land use plans or policies. These areas include designated critical habitats for endangered and threatened species. * Should be Avoided: Energy development is allowed but would be highly controversial. These areas include state parks and lands proposed for national wilderness preservation. See http://earth.google.com/gallery/kmz/protected_areas_energy_development.kmz