"A signature battle of the energy boom, a public fight over a waste-water deep disposal well, plays out amid scientific uncertainty over safety in a small town."

"The low-income neighborhood of older wood-frame homes in West Dallas is a far cry from the suburb of newly built brick houses in Frisco 30 miles to the north. But the two North Texas communities share a bond: Both were contaminated by industrial lead for nearly half a century."

"Debris that gathered this past summer on Alaska's Kayak Island made walking on its beaches feel like walking through a natural disaster zone, a federal biologist said Thursday."

"SIMI VALLEY, Calif. -- Lingering radioactive contamination exists at a former rocket test lab outside of Los Angeles that was the site of a partial nuclear meltdown, federal environmental regulators said Wednesday."

Illinois may soon approve the mining of fracking sand near a beloved state park.

Negotiations over an international treaty to combat mercury emissions will reach a climax next month in Geneva.

"Federal officials have given energy and mining companies permission to pollute aquifers in more than 1,500 places across the country, releasing toxic material into underground reservoirs that help supply more than half of the nation's drinking water. In many cases, the Environmental Protection Agency has granted these so-called aquifer exemptions in Western states now stricken by drought and increasingly desperate for water."

Drilling for gas and oil can be safe or it can be dangerous.

"Hospitals are on red alert and parts of Buenos Aires have been evacuated as a toxic cloud descends upon the city."

"For years, the controversy over natural gas drilling has focused on the water and air quality problems linked to hydraulic fracturing, the process where chemicals are blasted deep underground to release tightly bound natural gas deposits."

"Frustration and inconvenience are growing in Paulsboro as a risky cleanup proceeds at a deliberately slow pace following the derailment Friday of chemical-laden train cars on a bridge over the Mantua Creek."

"The Supreme Court [Monday] weighed whether a U.S. EPA rule issued Friday could resolve a dispute over stormwater runoff from logging roads."

"The Supreme Court may use an L.A. case to decide for the first time who can be held responsible for storm water runoff pollution."

A new study suggests that BP's use of dispersants during the 2010 Gulf oil spill likely allowed oil to penetrate beaches more deeply, making harmful effects last longer.

"In the midst of the domestic energy boom, livestock on farms near oil-and-gas drilling operations nationwide have been quietly falling sick and dying. While scientists have yet to isolate cause and effect, many suspect chemicals used in drilling and hydrofracking, or fracking, operations are poisoning animals through the air, water or soil."