Extraction of natural resources can have devastating consequences for our environment. The NASA Earth Observatory Feature on the Coal Controversy in Appalachia explains the environmental consequences of the mountaintop removal mining of coal. After reading the NASA article, it makes me think twice about turning on a light powered by electricity from a coal fired power plant. It shows coal has devastating consequences beyond the global warming CO2 emissions from coal fired power plants. Its another illustration why energy conservation and alternative clean energy sources are so important.