in april 2013, josh fox released "gasland 2", his "international odyssey uncovering a trail of secrets, lies and contamination related to hydraulic fracking". it challenges the gas industry's portrayal of natural gas as a clean and safe alternative to oil as a myth, and that hydraulically fractured wells inevitably leak over time, contaminating water and air, hurting families, and endangering the earth's climate with the potent greenhouse gas methane.