EcoWatch: As the U.S. Department of the Interiors Bureau of Land Management (BLM) updates rules for oil and gas drilling on federal land, the National Parks Conservation Association (NPCA) released yesterday National Parks and Hydraulic Fracturing: Balancing Energy Needs, Nature and Americas National Heritage. This new report examines the impact of existing, proposed and potential oil and gas development on Americas national parks and offers recommendations to ensure future drilling safeguards public health...