Over the past two centuries, humanity has become increasingly dependent on fossil fuels. Over this time, the consequences of the constant consumption of fossil fuels have accumulated to become a threat to industrialized cities. The burning of fossil fuels causes acid rain on cities and ecosystems around the world, tormenting their inhabitants. The increasingly deadly pollution caused by the burning of fossil fuels has claimed the lives of many people around the world by causing respiratory problems. Not only has pollution gotten worse, but the supply of fossil fuels is not unlimited: as humanity's dependence increases, the supply decreases, and this is all the more reason to stop humanity's dependence on fuels fossils. Fossil fuels should be replaced with cleaner alternatives because they cause environmental risks, are non-renewable and are harmful to human health. Since the dawn of the Industrial Revolution in the late 18th century, fossil fuels have been used constantly, slowly changing the planet's atmosphere. According to Mann, “the pre-industrial level of CO2 was 280 parts per million (ppm)” (Page no.). He predicts that at current rates we will reach 560 ppm by the end of the 21st century. To make matters worse, Mann says 450 ppm is dangerous as it will cause the Earth's average temperature to rise by 2 degrees Celsius. Recommends taking measures to keep CO2 below 405 ppm (Page No.). Mann notes that in 2013 the value managed to reach 400 ppm (Page no.). It goes without saying that the point of no return is just around the corner. Unfortunately, the effects of pollution are already being felt around the world. Pollution can cause many health problems and damage various organs in the body. When people think... about the center of the paper... i. “Environmental pathways of potential human health impacts from oil and gas development in northeastern British Columbia, Canada.” Environmental Reviews 20.2 (2012): 122-134. Academic research completed. Network. April 3, 2014. Liu, Tingwu, et al. “A Combined Proteomic and Transcriptomic Analysis of Sulfur Metabolism Pathways of Arabidopsis Thaliana Under Simulated Acid Rain.” Plos UNO 9.3 (2014): 1-11. Academic research completed. Network. May 16, 2014. Mann, Michael E. “False Hope.” Scientific American 310.4 (2014): 78-81. Academic research completed. Network. 9 May 2014.Smil, Vaclav. "The long, slow ascent of the sun and the wind." Scientific American 310.1 (2014): 52-57. Academic research completed. Network. May 16, 2014. United States. Energy Information Administration. “Monthly on electricity with data for February 2014” eia.gov. US Energy Information Administration, 22 April 2014. Web. 8 May 2014.