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"Hackers working for Russia claimed “hundreds of victims” last year in a giant and long-running campaign that put them inside the control rooms of U.S. electric utilities where they could have caused blackouts, federal officials said. They said the campaign likely is continuing."

"Killings of land and environmental activists rose in 2017 as Mexico and the Philippines registered worrying increases in such murders and Brazil saw the most ever registered in a single country, a watchdog group said Tuesday."

"When a huge floating gyre of plastic waste was discovered in the Pacific in the late 1980s, people were shocked. When whales died and washed ashore with stomachs full of plastic, people were horrified. ... Though some of it came from ships, most, presumably, was from land. But how much was coming from where?"

"Hoover Dam helped transform the American West, harnessing the force of the Colorado River — along with millions of cubic feet of concrete and tens of millions of pounds of steel ... . Now it is the focus of a distinctly 21st-century challenge: turning the dam into a vast reservoir of excess electricity, fed by the solar farms and wind turbines that represent the power sources of the future."