"Only 3 percent of the juveniles of an endangered salmon species survived the drought along the Sacramento River in 2015 despite extraordinary efforts by federal and state officials to save them, federal officials said Monday."

"Over the past 35 years, the population of right whales in the North Atlantic Ocean has not expanded nearly as much as scientific understanding of the endangered species."

"The FBI is now investigating the contamination of Flint’s drinking water, a man-made public health catastrophe, which has left an unknown number of Flint children and other residents poisoned by lead and resulted in state and federal emergency declarations."

"Could the current strong El Niño help soak the National Football League's 50th Super Bowl next Sunday?"

"Is this where North Pacific humpback whales practice their songs?"

"Two years after thousands of gallons of a coal-cleaning agent leaked into the drinking water supply of 300,000 West Virginians, the sentencings of six officials at a chemical distributor this month will bring to a close criminal cases in the spill."

"Across Michigan, in cities large and small, lead poisoning continues to plague children, limiting them in school and on the playground."

"The City of Milwaukee and 70,000 residential property owners are facing total costs of $511 million or more to remove all lead pipes delivering drinking water to those homes, and eliminate the risk of contaminating tap water with the toxic metal."

"The United States is monitoring Iraq's largest dam for signs of further deterioration that could point to an impending catastrophic collapse, US army officers said on Thursday."

"Following the lead of several other states, Maryland is preparing to sue the oil industry for the costs of cleaning up a one-time gasoline additive that’s contaminated   water across the state."