"Mining executive Tom Collier, who boasted in secretly taped conversations that he had leveraged his ties to Republican officials to advance a controversial project in Alaska, resigned Wednesday."

"New findings suggest a previously unknown virus may play a role in the sudden death of many freshwater mussels in recent years."

"Many residents of Martin County, Kentucky, won’t drink their tap water, a legacy of years of mismanagement".

"In the Pacific north-west, local people work the shoreline, creating conditions for useful species to thrive".

"A “crazy year” in the Arctic has resulted in the second-lowest extent of sea ice in the region, scientists said Monday. Researchers with the National Snow and Ice Data Center said the minimum was most likely reached on Sept. 15, with 1.44 million square miles of ocean covered in ice. Since then, with temperatures falling and new ice forming, coverage has been increasing."

"In secretly recorded meetings, executives with the Pebble Mine project said the operation could run nine times longer than outlined in their permit filings."

"The deaths of hundreds of elephants in Botswana this year which had baffled and alarmed conservationists were caused by toxins produced by cyanobacteria in water, officials said on Monday."

"Tropical Storm Beta was predicted to bring a foot of rain to parts of coastal Texas and Louisiana next week as the 23rd named storm of this year’s Atlantic hurricane season moves ashore on Monday night, the National Hurricane Center said."

"A giant new vessel, OceanXplorer, seeks to unveil the secrets of the abyss for a global audience."

"Scientists trap and relocate young eels, helping the species and reviving an ecosystem. Some say assisted migration could help other species survive the warming planet."