Of all the energy sources currently in use on planet earth, none have such a long history or deep controversy as coal. As one of the earliest sources of energy, coal has proved to be a reliable performer over time but carries some concerns when it comes to air pollution and climate change.
How much of the electricity generated today is powered by coal and will it ever become obsolete? How is coal mined? What exactly IS coal? We explore the science, mining methodology and history of coal in this episode of Commodity Culture.