Decades of experience with them.
Why do earthquakes happen? What are you, American?
I am aware of what fracking is. I am also aware of what causes earthquakes. While supervising frac jobs, I have never felt an earthquake, even though I know that everytime I break down a rock formation I am creating microseismic events by the scads. (Scads is a technical term used around Americans to convey BIG NUMBERS without confusing them unnecessarily)
Industry mouthpiece.
Posts disregarded.
Sorry Synth --- your Medieval method of disregarding information
has no place in real science debate. Industry hires the MAJORITY of qualified science and engineering grads. You disregard them only if you're lazy or incapable of refuting them. Even in a court of law, their word is equal to any political hack you choose.
Personally -- I don't want an energy policy developed by political hacks that ignore the experience, knowledge and capabilities of the guys who ACTUALLY DO THE WORK of keeping the lights on and your ass warm...