"Recently released testing results in western Pennsylvania, upstream from Pittsburgh, reveal evidence of radioactive contamination in water flowing from an abandoned mine. Experts say that the radioactive materials may have come from illegal dumping of shale fracking wastewater."

"As far away from society as you might seem while floating on the Colorado River through Grand Canyon National Park in Arizona, or hiking along its shorelines, heavy metals are polluting the river in concentrations that could pose a health risk."

"Chinese authorities warned that cyanide levels in the waters around the Tianjin Port explosion site had risen to as much as 277 times acceptable levels although they declared that the city's drinking water was safe."

"The task of removing lead-contaminated soil from thousands of homes near a closed Vernon battery recycling plant would be the largest cleanup of its kind in California and rank among the biggest conducted nationwide, say environmental officials and experts in toxic remediation."

"Sixteen companies have reached a $14.3 million settlement with the U.S. Environmental Protection Agency and the state of Maryland to stabilize and cap waste and contaminated soil at the Central Chemical Superfund site in Hagerstown, the agency announced Monday."

"The U.S. Environmental Protection Agency has tightened standards for the nation's landfills to reduce emissions of methane and other harmful air pollutants."

"A stretch of river fouled by toxic waste from an abandoned gold mine in southwestern Colorado last week was reopened to kayaking and rafting on Friday while water from river-fed irrigation canals was deemed safe for crops and livestock."

"Air pollution is killing about 4,000 people in China a day, accounting for 1 in 6 premature deaths in the world's most populous country, a new study finds."

"The issue of abandoned mines and their legacy of water pollution is not unique to Colorado. Abandoned mines across Ohio have polluted streams and creeks for decades, turning waterways orange and lacing them with sulfuric acid, dissolved metals and toxic sediments."

"A federal judge on Wednesday approved Exxon Mobil Corp's $5.07 million settlement of charges that it violated the federal Clean Water Act and state environmental laws in connection with a 2013 oil spill in central Arkansas."