Hours before the explosion of a natural gas line in San Bruno, CA that killed at least six people on Thursday, the EPA had asked gas companies to release information on the chemicals used in fracking (which are now exempt from the Clean Water Act and legally allowed to be kept secret).

Reports of water pollution from fracking are on the rise across the country, ranging from undrinkable water because of contamination to people finding their tap water is flammable.

The San Bruno fire was brought under control by noon on Friday, but so many questions remain, not least of which is the very identity of chemicals being drilled into the ground.

Will gas companies give the EPA the info it wants? Or is it going to devolve into another discussion of 'extremists,' as Pennsylvania Homeland Security is currently labeling environmentalists, where opponents to fracking are not allowed to... oppose fracking.