Grist: The Hallowich children were just 7 and 10 years old when their family received a $750,000 settlement to relocate away from their home in Mount Pleasant, Penn., which was next door to a shale-gas drilling site. By the time theyre grown up, they may not remember much about what it was like to live there - the burning eyes, sore throats, headaches, and earaches they experienced thanks to contaminated air and water. And maybe its better if they dont remember, since theyre prohibited from talking...