Some bullet points: The proportion of global energy supplied by coal is approaching that for oil. (dotearth.blogs.nytimes.com)
It is clear that coal will continue to play a crucial role in global energy supply. (worldcoal.org)
It's the main ingredient in natural gas, a fuel that is increasingly seen as a vital bridge toward a less - polluting global energy supply. (dotearth.blogs.nytimes.com)