A week after the attacks of September 11th, the EPA told people there was no long term danger to their health. Residents and workers returned to the disaster area where there were still high levels of carcinogenic particles and chemicals such as, asbestos, fiberglass, mercury, and benzene, among others. Studies continue to find stronger links between exposure and cancer.
Hydraulic Fracturing, also known as fracking, is a method of drilling deep beneath the surface to extract shale gas, an energy source. Shale gas is embedded in dense rock, so drillers inject a mixture of water, sand, and chemicals to fracture the rock which opens up fissures in the stone through which the gas can escape. Chemicals used for fracking are often hazardous and cancer-causing agents known to contaminate drinking water near fracking sites.