When the Delaware City Refinery complex opened in 1957, the petrochemical trade press hailed it with superlatives. It was the largest single refinery project ever built, and became a hub for an industry that sprawled into Pennsylvania and New Jersey. "Today, most of Delaware City's chemical plants have closed, the result of tougher economic conditions and environmental laws."

"Virtually the entire sugar beet crop in the United States is genetically engineered to protect it from herbicides. Now, a lawsuit claiming the biotech beets pose a risk to other varieties could threaten sugar production."

"Exposure to both tobacco smoke before birth and lead during childhood increases a child's risk of developing attention deficit hyperactivity disorder (ADHD) more than eight-fold, according to new research from Cincinnati Children's Hospital Medical Center."

"Could nuclear power plants last as long as the Hoover Dam? Increasingly dependable and emitting few greenhouse gases, the U.S. fleet of nuclear power plants will likely run for another 50 or even 70 years before it is retired -- long past the 40-year life span planned decades ago -- according to industry executives, regulators and scientists."

Despite tens of billions spent under the 1972 Clean Water Act to upgrade the sewage-handling systems of U.S. cities, many have reached capacity and are unable to handle wet-weather flows. The result is that many are "violating the law by dumping untreated or partly treated human waste, chemicals and other hazardous materials into rivers and lakes."

"With its gleaming red, blue and green feathers, the painted bunting is often described as the most beautiful migratory songbird in North America. After a 30 year decline and extirpation from parts of its U.S. range, the species appears to be recovering."

"One of the great mysteries about North America is what killed off woolly mammoths and other exotic animals that roamed the land after the last ice age. Ideas have ranged from a comet impact and climate change to human hunters. A study published Friday in Science Magazine provides new clues about this — cleverly deduced from samples of a fungus that grew on the animals' dung."

NIEHS Director Linda Birnbaum says she is concerned that as U.S. manufacturers shift away from toxic chemicals in consumer goods to alternative chemicals, "we kind of jump from the proverbial fry pan into the fire."

"U.S. EPA moved closer yesterday to finalizing new engine and fuel standards for the largest ocean-bound ships by sending the draft rules to the White House for review."

"The Obama administration on Wednesday announced plans to beef up federal strip-mining inspections and reviews of mining permits issued by state regulators like West Virginia's Department of Environmental Protection."