Pollution

"Beneath the streets of Boston, two robots named Mario and Luigi inspect the flow of human waste, collecting data on city residents."

"The EPA has already spent $100 million to remediate decades of mining."

"A major part of Rio’s winning Olympic bid was a plan to capture and treat 80 percent of the sewage that flows into Guanabara Bay, something organizers now admit will not happen — certainly not by August, if ever."

"A federal judge in Virginia could soon decide a potentially landmark case determining whether power plants can be held accountable for contaminating surface waters with toxic chemicals that leached into the ground from coal ash pits."

"Presidential hopeful Hillary Clinton would push Congress to reverse a 2005 measure that exempts hydraulic fracturing from certain federal environmental standards, a top adviser said."

"AMBLER, Pa. -- U.S. EPA's Greg Voigt opens a chain-link gate, pushes aside waist-high weeds and scrambles to the highest point in this Philadelphia suburb: a 100-foot pile of industrial waste."

"Environmental groups won a partial victory last week in their campaign to make sure Peabody Energy cleans up its coal mines, a growing concern as the company is going through Chapter 11 bankruptcy proceedings."

"Husky Energy issued a release on Tuesday afternoon as a "clarification" of the timeline surrounding the leak of 200-250 cubic meters of oil into the North Saskatchewan River."

"Husky Energy Inc has indefinitely closed a pipeline that leaked oil into a major Canadian river, a company official said on Monday, as the spill forced a second city to stop drawing drinking water."

"GRASSY NARROWS FIRST NATION—For more than 40 years the mercury has percolated through river sediment, the food chain and generations of residents."