Water & Oceans

"While residents of Medicine Hat anxiously wait for swelling river waters to recede, flooding in Calgary has left the city’s economy in shambles."

"A large concrete water main that exploded this spring along busy Connecticut Avenue in Chevy Chase has brought to light a little known local distinction: The Maryland suburbs have more of a notoriously problematic stock of pipe than almost any major U.S. water utility."

"The facilities will restore pumping of drinking water from scores of contaminated San Fernando Valley wells, lessening L.A.'s reliance on imported water, agency says."

"Scientists say the Mackenzie River and its tributaries play a crucial role in cooling a warming climate, acting as a 'climate stabilizer.'"

"Dismantling of the silt-filled San Clemente, to start next month, is being called California's largest-ever dam removal."

"The brutally efficient coal-extraction method known as 'longwall mining' has permanently damaged a half dozen streams in Pennsylvania, state regulators have found — a finding that could trigger deeper waves for such operations in the state."

"A federal environmental regulator will not finish and review a draft report tentatively linking hydraulic fracturing to Wyoming groundwater contamination and will instead allow state agencies to further investigate the issue."

"Downtown Calgary could look like a bit of a ghost town today, with entire neighbourhoods shut down and office workers told to stay home due to massive flooding."

"NEW ORLEANS -- Scientists in Michigan and Louisiana are predicting a big summer 'dead zone' in the Gulf of Mexico unless a tropical storm hits the area shortly before or during the annual measurement. In the Chesapeake Bay, scientists expect a smaller-than-average area where there's too little oxygen to support fish, shellfish and other aquatic life."