"Arctic sea ice shrank to its lowest level in 38 years last month, setting a record low for the month of May and setting up conditions for what could become the smallest Arctic ice extent in history, according to National Snow and Ice Data Center data released Tuesday."

"Coral reefs have almost always been studied up close, by scientists in the water looking at small portions of larger reefs to gather data and knowledge about the larger ecosystems. But NASA's Jet Propulsion Laboratory is taking a step back and getting a wider view, from about 23,000 feet above."

"Low-elevation snowpack across the Rocky Mountains, the Sierra Nevada and the Cascades will disappear in the coming decades if global warming continues unabated, according to a new study. The changes will cause water shortages in the region and dry out forests and grasslands, the study's authors say."

"Firefighters are tackling larger and more aggressive wildfires as drought conditions continue for a fifth year in California, drying out swaths of forest land."

"Cases of Legionnaires' disease nearly quadrupled in the United States over a 15-year period, and almost all might have been prevented with the proper use of disinfectant, the right water temperature and other measures, federal health officials said Tuesday."

"The Vermilion Middle Fork is a swift-flowing river winding through lush forests, rolling prairie and craggy cliffs in central Illinois. Designated as one of the country’s “National Scenic Rivers,” it is subject to federal and state protections, popular with paddlers and home to wildlife including 24 endangered or threatened species. But the river’s banks butt up against three massive pits filled with toxic coal ash produced over five decades by the Vermilion coal-fired power plant... ."

"U.S. EPA has issued its first-ever guidance on contamination in drinking water in the wake of a nuclear disaster, 'dirty bomb' or other radiological accident, drawing criticism from public health and environmental groups."

"Delta smelt have hovered close to extinction for years, but biologists say they’ve never seen anything like this spring. 'There’s nothing between them and extinction, as far as I can tell,' said Peter Moyle, a UC Davis biologist who has studied smelt and other Sacramento-San Joaquin Delta fish species for nearly four decades."

NOAA has released a new plan for researching and managing ocean noise and its impact on marine life.

"Replacing 13 miles of water mains every year for the next 50 years. Repairing or replacing five dams. Switching out at least 2,000 lead service lines every year for five years. Those are some of the "immediate needs" for the city of Flint's ailing water system that go far beyond removing lead particles from the contaminated drinking water supply, according to a state-commissioned report obtained by the Detroit Free Press."