"Polychlorinated biphenyls, or PCBs, are industrial chemicals so toxic that Congress banned them 40 years ago. Research has shown that they can cause a range of health concerns, including cancer and neurological problems such as decreased IQ. And yet, because they were commonly used in building materials for decades, they continue to contaminate classrooms in between 13,000 and 26,000 schools nationwide, according to Harvard researchers."

"A global agreement to combat climate change will take force after support from European nations sent the accord across an important threshold on Wednesday, prompting U.S. President Barack Obama to hail it as a 'historic day' for protecting the planet."

"President Barack Obama on Wednesday said the U.S. government has teams and supplies positioned to respond to Hurricane Matthew as the storm barrels toward Florida and other southeastern states." Millions were told to evacuate in Florida, Georgia, and South Carolina.

"Inuit hunters downstream from a massive $8 billion 'clean' energy project in Labrador fear it will poison their food supply with methylmercury when flooding begins later this month."

"Trees believed to have been extinct in Britain have been discovered at the Queen’s official residence in Scotland."

"A Cape Breton community in the midst of a water crisis has been promised that the problem will be fixed, but it may be as long as three years before clean water is flowing through the taps."

"Caelus Energy said it’s made a major oil discovery on the North Slope, at Smith Bay. The company estimates the oil under its current state leases at 6 billion barrels and says as much as 10 billion may lie under the shallow bay."

"For Nayesa Walker, the clock started ticking just over a month ago. On Sept. 1, she was given 60 days to find a new home after East Chicago Mayor Anthony Copeland abruptly announced that the public housing complex where she and her three children live would be demolished. The land is contaminated with lead and arsenic."

"The loneliest frog on Earth is dead, taking with him the hope of an entire species."

"Exxon’s ambitious work on powering clean vehicles 40 years ago parallels its cutting-edge research on climate change during the same era."