Fossil energy currently accounts for 80 percent of world energy use, and energy use is responsible for 60 percent of global greenhouse gas emissions. Energy security is a key national policy goal for both rich and poor countries, and the reserves of cheap, fossil energy are both vast and widely distributed. This leads the IEA to predict that fossil fuels will play an even bigger role in 2050 than today. That is, of course, if business is allowed to proceed as usual.