"ARLINGTON, Texas — Mayor Robert Cluck wants to test the air near every new gas well in Arlington and a neighboring city has started its own air quality study."

"The Environmental Protection Agency wants to regulate a toxic chemical used in rocket fuel that has contaminated drinking water supplies, reversing a decision made under the Bush administration."

"University researchers said on Thursday they recently found alarming levels of cancer-causing toxins in an area of the Gulf of Mexico affected by BP's oil spill, raising the specter of long-lasting health concerns."

"Illinois is failing to crack down on water pollution from large confined-animal farms, the Obama  administration announced Wednesday in a stinging rebuke that gave the state a month to figure out how to fix its troubled permitting and enforcement programs."

"The tension between drillers in Pennsylvania's gas-rich Marcellus shale and communities trying protect natural resources has reached a fevered pitch in Clinton County, where a zoning hearing board resigned rather than allow a water withdrawal station at a scenic bend of the West Branch of the Susquehanna River that draws kayakers, hang gliders, hunters and fly fishermen."

"Federal officials began a sweeping crackdown on pollution in the Chesapeake Bay on Friday - threatening to punish five mid-Atlantic states with rules that could raise sewer bills and put new conditions on construction."

"Great Lakes pollution is getting worse because sewage systems are outdated and Ontario’s north is turning into a Wild West for miners and forestry companies, warns Environmental Commissioner Gord Miller."

"A Valdez-based citizen watchdog group told legislators Tuesday that the state's arsenal of oil-response equipment lags behind modern technology and the state division that enforces the rules for preventing and cleaning up spills has an 'ever-worsening funding shortage.'"

The gas-drilling boom that is sweeping Pennsylvania is demonstrating the power of money to overcome landowners' reluctance and influence legislators and regulators. This fall, a gusher of gas-industry political campaign donations is spewing.