https://www.scientificamerican.com/article/renewable-energy-is-surging-but-not-fast-enough-to-stop-warming/ > Renewable energy is now cheaper than natural gas and coal in parts of the United States. The only problem: Cheap renewables may not be enough to stop the world from warming to dangerously high levels. > The dynamic is outlined in a pair of recent reports. The first, by the financial advisory firm Lazard Frères & Co. LLC, finds wind and solar costs have declined by 69 percent and 88 percent, respectively, over the last nine years. In some parts of America, renewables don’t need subsidies to outcompete fossil fuels.