"In a troubling new discovery, scientists studying ocean waters off California, Oregon and Washington have found the first evidence that increasing acidity in the ocean is dissolving the shells of a key species of tiny sea creature at the base of the food chain."

"The National Transportation Safety Board has launched an investigation of a freight train derailment in Lynchburg that destroyed three oil tanker cars, lifted a plume of black smoke into the sky and spilled thousands of gallons of crude oil into the James River."

"Water tainted by agricultural runoff is an old concern in rural Canada, but one that is becoming increasingly worrisome as the climate changes. Extreme weather events, such as sudden deluges and floods, increase the flow of pollutants into surface waters. Extended dry periods cause industrial and organic pollutants to build up on the land – then an intense rainstorm can wash it all at once into watersheds. Those storms also cause floods and erosion, which can overwhelm water-filtration systems. At the same time, river flows are declining and water is residing longer in lakes, concentrating pollutants."

"Newly licensed marijuana growers in Washington state may find themselves without a key source of water just as spring planting gets under way."

"The warming climate is melting sea ice, opening U.S. Arctic waters to shipping and oil and gas development, but the National Research Council warned today that U.S. personnel, equipment, transportation, communication, navigation, and safety resources are not adequate for an Arctic oil spill response."

"Hundreds of West Virginia residents who sought emergency-room care in January were treated for symptoms that were 'consistent' with exposure to MCHM, the primary chemical that leaked from the Freedom Industries tank farm into the region’s Elk River drinking-water supply, according to a review made public Wednesday."

"Pastor Bob McCartney of First Baptist Church tries to love his neighbor as himself. He’s just not thrilled that Wichita Falls will soon have him drinking water that once swirled down his neighbor’s toilet."