"New Hampshire says emissions of a chemical used to make Teflon coatings may be the source behind the contamination of more than 40 wells in several towns."

"Among firs and cedars high in the Sierra Nevada, scientists are using an array of instruments to monitor the health of the forest, measure the snowpack and track the water that melts and seeps into the soil. As they collect data, they’re taking snapshots of a landscape in the midst of major changes."

"Detroit Public Schools water test results released Thursday show that 15 buildings have tested positive for high lead levels, including one where a drinking fountain recorded 100 times the allowable limit."

"The Obama administration on Thursday unveiled new oil well control rules to prevent the kind of blowout that happened six years ago on a BP Plc rig in the Gulf of Mexico."

"Chicago's North Broadway Street is always bustling, but in the past few weeks, it has been noisier than ever. There is water flowing from an open fire hydrant, and as traffic inches by, a cement truck backs up and pours concrete down into a big hole in the street."

"Michigan urged to terminate Line 5 crossing in the Straits of Mackinac."

"Twin, 63-year-old oil pipelines crossing beneath the waters that connect Lake Michigan and Lake Huron are currently out of compliance with the state agreement that allows their existence, according to a letter and memorandum sent Wednesday by 22 environmental and tribal groups to Michigan’s governor and attorney general.

"FLINT, Mich. — Near the top of the daily challenges that Flint residents face in a city without safe drinking water is how and where to shower."

"The [Chesapeake] Bay’s blue crab population increased to its highest level in four years, and the number of spawning-age females — a key ingredient for future abundance — nearly doubled from last year, according to survey results released Tuesday."

"The Obama administration will announce Thursday safety regulations for offshore oil and natural gas drilling to prevent the kind of explosion that happened six years ago on a BP rig in the Gulf of Mexico, an official told Reuters."