the l lel ofofradium in n the marcelis taes the safe disposal at, meaning that 'o tere's alsso--there's anecdotal evidene that these frac fluids will leach uranium out of these shale dedeposits. there's also r radon in these shale depeposits. so in addition to the fracking fluid, which we know is toxic, the frac flowback leaches radium out of le. e shae radium is carcinogenic, and that's something g 's being introduced to the surface in a ill tt wasn't there bef >> as the profile of the potential dangers of hydraulic and experts are becoming ecreasingly concerned by the ansion of fracking. hiback wh expensive ads, p. campaigns, and high-level >> itit'it of b.s., of f p.r., of ads, and payof to poliliticians is extraordinary. the return on investmenent of paying off f a politician,un discrediting critics is--it's one of the b best investments that the indusustry can make. >> although they declined an opportunity to speak on camera, a spokesperson for the marcellus shale coalition, which represents the gas industry, told "the ecologist" that gas trfromracking is both safe and "a panacea f