what are the concerns that exist about fossil fuels
Fossil fuels, including coal, oil and natural gas, are currently the world's primary energy source.Formed from organic material over the course of millions of years, fossil fuels have fueled U.S. and global economic development over the past century.et fossil fuels are finite resources and they can also irreparably harm the environment. According to the Environmental Protection Agency, the burning of fossil fuels was responsible for 79 percent of U.S. greenhouse gas emissions in 2010.