"Several substances seem to have contributed to the massive fish die-off in the Oder River that forms much of Germany’s border with Poland, a German official said Monday."

"In July, a 20-year-old man from Rockland County, N.Y., was diagnosed with polio, a disabling and potentially deadly disease that had been considered eliminated in the United States. The infected man was unvaccinated and had not traveled overseas during the period when he could have been exposed to the virus, suggesting he contracted it in this country."

"When the Supreme Court restricted the ability of the Environmental Protection Agency to fight climate change this year, the reason it gave was that Congress had never granted the agency the broad authority to shift America away from burning fossil fuels. Now it has."

"Canada's oil sands mining industry on Thursday outlined proposals to release treated water from tailings ponds into northern Alberta's Athabasca River, a move environmental groups say risks damaging one of the world's largest freshwater deltas."

"Two-thirds of pledges to go greener on plastic fail or are dropped, a DW investigation has found. Here's how European food and drink companies break their own commitments, and how legislation might hold them accountable."

"Cities in relatively prosperous countries are blighted by serious levels of air pollution from nitrogen dioxide, often without realising the extent of the problem, research has found."

"The U.S. Army Corps of Engineers on Monday opened a two-month window for the public to comment on a plan to dig a tunnel beneath the Straits of Mackinac to house Enbridge's controversial Line 5 oil pipeline."

"Poison cannot be ruled out as the cause of a mass die-off of fish in the Oder river but tests so far have not proven toxic substances were to blame, Polish Environment Minister Anna Moskwa said on Sunday."

"Marginalized communities inundated with air pollution could be some of the biggest beneficiaries of the tax and climate bill. Environmentalists say the bill would bring potentially transformative local air quality gains, despite a tradeoff of benefits to the fossil fuel industry."

"Spots of solid petroleum residues and oily mats can still be found in coastal wetlands along the Gulf of Mexico, according to a new study."