"It is known that mountain pine beetle infestations have the potential to raise nearby air temperatures by killing off trees that provide a natural refrigerator effect for forests. Now, researchers are releasing hard numbers documenting how the pests' invasions affected a specific place."

"WINDSOR, Ontario -- For more than three decades, workers, most of them women, have complained of dreadful conditions in many of this city’s plastic automotive parts factories: Pungent fumes and dust that caused nosebleeds, headaches, nausea and dizziness. Blobs of smelly, smoldering plastic dumped directly onto the floor. 'It was like hell,' says one woman who still works in the industry."

The Conservative Harper government is discouraging Environment Canada scientists from talking to news media about their published findings on pollution from oilsands.

"OTTAWA -- To attract Chinese investment for development of the Alberta oil sands and other natural resources, Prime Minister Stephen Harper is pushing through a treaty that gives away Canadian legislative and judicial sovereignty with no public debate, warns a Canadian international investment law expert and law professor."

"High-profile U.S. protesters against the Canadian oil sands are taking their activism north this week, as the battle over a pipeline that would send crude to Asia enters a critical regulatory stage."

"CALGARY -- The ugly scars left on the northern Alberta landscape by the oil sands have prompted calls from around the world for an independent body to gather data on the ecological damage wrought by the energy industry."

"Climate change contributed to a fivefold increase in weather-related natural disasters in North America over the past three decades, according to Munich Re, the world’s biggest reinsurer."

"Budget cuts to the ozone monitoring department were $13.3m this year, the 25th anniversary of the Montreal protocol."

"Despite recent announcements in Ottawa and Quebec that suggest asbestos will soon be a thing of the past, products made of the cancer-causing mineral are still being imported and used in Ontario today."

"The sign by the side of the highway is hard to miss: ASBESTOS. No, it’s not a health warning to motorists about hazardous material ahead. It’s the name of a proud community in southern Quebec, waging a fight to survive in an increasingly lonely stand against the world."

"Recent action by Koch Oil Sands pulls the curtain back further on the Koch family's deep but quiet involvement in Canada's oil sands industry."

"Organic champagne anyone? Environmental activists were celebrating Thursday as Quebec's new government gave an unambiguous thumbs-down to the shale gas industry in the morning and confirmed its intention to quickly shut down the Gentilly-2 nuclear plant in the afternoon."

"Canada dropped its longtime opposition on Friday to the international listing of asbestos as a hazardous material, a designation intended to curb the use abroad of the fire-resistant substance, which can cause cancer and other illnesses."

"OTTAWA -- Atmospheric scientists from around the world are asking Environment Canada to back down from a plan that they believe would compromise ozone and radiation monitoring by putting it into the hands of an Information Technology computer expert."

"Canadian mining giant Teck Resources Ltd. has admitted in a U.S. court that effluent from its smelter in southeast British Columbia has polluted the Columbia River in Washington for more than a century."