"OTTAWA — The federal government is set to declare a bacteria killer found in many toothpastes, mouthwashes and anti-bacterial soaps as toxic to the environment, a move which could see the use of the chemical curtailed sharply, Postmedia News has learned."

"On Monday, the film director and explorer James Cameron became the first human to reach the world’s deepest abyss on his own, the Challenger Deep, which lies 62 miles southwest of Guam in the Pacific Ocean. The dive had been attempted only once before, in 1960, when Don Walsh, a retired United States Navy captain, and Jacques Piccard, a Swiss engineer, reached the spot in the Navy submersible Trieste."

"The oil industry launched a full-court press Monday in opposition to Democrat-backed legislation that would repeal billions in tax breaks for the largest oil companies."

"LONDON -- A gas cloud has encircled Total's Elgin Franklin platform in the North Sea after failed attempts to shut a problematic production well caused a leak, an RMT union official said, based on eyewitness accounts from workers on nearby rigs."

"Environmentalists have mounted a legal challenge against Wyoming regulators they say are improperly approving oil and gas companies’ 'overly broad,' boilerplate requests to shield information about the chemicals they use in drilling operations."

"OKLAHOMA CITY -- As President Barack Obama pushes to fast-track an oil pipeline from Oklahoma south to the Gulf Coast, an American Indian tribe that calls the oil hub home worries the route might disrupt sacred sites holding the unmarked graves of their ancestors."

"The world is close to reaching tipping points that will make it irreversibly hotter, making this decade critical in efforts to contain global warming, scientists warned on Monday."

"There is a particularly sensitive accusation reverberating through online discussion boards and social media in Japan: that Emperor Akihito's speech on the one year anniversary of the earthquake and tsunami was censored on TV for his comments about the nuclear disaster at Fukushima."

"NEW ORLEANS -- After months of laboratory work, scientists say they can definitively finger oil from BP's blown-out well as the culprit for the slow death of a once brightly colored deep-sea coral community in the Gulf of Mexico that is now brown and dull."