"A freight train smacked into a truck carrying garbage and careened off the tracks in Rosedale Tuesday afternoon, triggering an explosion felt throughout the region and sending up a plume of black smoke visible for miles."

"Exposure to pesticides and other chemicals is linked to an increased risk of developing Parkinson's disease, according to a fresh look at some past research."

"Bisphenol A is used to line drinks cans and in tests affected the way genes work in the brains of laboratory rats."

"Mistakes were made, and one narrative too readily embraced, in coverage of the blast. Meanwhile, The Dallas Morning News excelled."

"Industrial farming has played a part in sucking this critical element out of our soil."

"In the 1980s, manufactures began making cockroach baits that combined sweet glucose with deadly insecticides. By 1993, many cockroach populations somehow developed an aversion to the bait. Now, 20 years later, scientists finally understand how the roaches beat these traps."

"In a rare display of bipartisanship on Capitol Hill, a group of key senators unveiled legislation Wednesday that would require chemical companies to provide more health and safety information about their products and give regulators more power to force harmful compounds off the market."

"With smoke and tar from faulty light fixtures leaking into New York City public school classrooms at alarming rates, the Bloomberg administration said on Tuesday that it would cut in half the time it needed to replace them."