March 22, 2012 was World Water Day. See how North Carolina citizens came together to protect their waters from coal ash.
It's no secret that coal is our dirtiest energy source. However, what many people don't know is that as coal burns, many of its most toxic elements, including heavy metals like arsenic, mercury and chromium, are concentrated in the ash that remains and the sludge that's scrubbed from smokestacks. This by-product is called coal ash. It's the second largest industrial waste stream in United States and is essentially unregulated.