Coal, oil and methane. These are the principle fossil fuels that humans have been using to create energy for years. But the era defined by these energy sources is over. The future looks to renewable energy because the time is and must be now. Global warming, or climate change, is happening and CO2 emissions have reached unsustainable levels. Cities are blanketed in smog. For this reason we need to keep oil, coal, methane and all other fossil fuels in the ground, in order to safeguard the future of the planet and the generations to come. Read the latest news on the demise of fossil fuels and the end of an era on LifeGate.