"The Standing Rock Sioux Tribe is asking a judge to throw out a federal permit for the Dakota Access oil pipeline, arguing that the government shut the tribe out of a court-ordered second environmental review and ignored its concerns."

"Last year, a backyard in Butte, Mont., collapsed without warning. No one was hurt, but a 30-foot sinkhole yawned where a children's wading pool once sat. At the bottom was a century-old mine shaft that had never made the state's list of abandoned mines needing attention."

"The Fish and Wildlife Service need not reveal the identities of hunting trophy permit holders, a federal judge has ruled."

"A study of young children in Canada suggests those whose mothers drank fluoridated tap water while pregnant had slightly lower IQ scores than children whose mothers lived in non-fluoridated cities. But don’t dash for the nearest bottled water yet."

"Forum attendees welcomed Sen. Elizabeth Warren with lulus and a standing ovation after Rep. Deb Haaland, Laguna Pueblo, introduced the presidential candidate on stage at the largest and second Native American presidential forum."

"The White House, blindsided by a pact between California and four automakers to oppose President Trump’s auto emissions rollbacks, has mounted an effort to prevent any more from joining the other side."

"When the Navajo Generating Station in Arizona shuts down later this year, it will be one of the largest carbon emitters to ever close in American history."

"The Federal Emergency Management Agency has wasted more than $3 billion and misused thousands of its employees by responding to hundreds of undersized floods, storms and other events that states could have handled on their own, an investigation by E&E News shows."