<http://schema.org/alternativeHeadline>
"It's worth remembering that at the end of 2008, more than 1 billion gallons of toxic coal ash slurry was spilled by the Tennessee Valley Authority. When will our addiction to fossil fuels hurt enough to stop?"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/energy/blogs/the-tva-coal-ash-spill-the-other-big-leak>