"Stephen Harper heads to the White House on Wednesday to unveil a long-awaited border security agreement with U.S. President Barack Obama, but the visit comes at a particularly tense moment in Canada-U.S. relations as TransCanada's Keystone XL pipeline saga rages on."

"Aboriginal groups in the Canadian Pacific province of British Columbia said on Thursday they had formed a united front to oppose all exports of crude oil from the Alberta tar sands through their territories."

"African leaders including Archbishop Desmond Tutu, Jay Naidoo of former President Nelson Mandela's cabinet, and Zwelinzima Vavi, general secretary of the Congress of South African Trade Unions, on Wednesday released an ad calling on Canada to step up the battle against global warming, rather than actively promote the use of its tar sands."

"Global climate talks got an inauspicious start in Durban, South Africa, on Monday with reports that Canada planned to withdraw fully from the Kyoto Protocol, a carbon-limiting multinational treaty first adopted in 1997 and scheduled to expire in 2012."

"While the Canadian government continues to block the inclusion of chrysotile asbestos from a UN agreement on hazardous materials, millions of dollars are being spent to remove the controversial substance from the Parliamentary Buildings and since Aug. 31, a combined total of more than 1,000 metric tonnes of asbestos have been removed from the West Block and Wellington Building, says Public Works."

"Most of the world, including the medical community, agrees that asbestos is desperately dangerous. The World Health Organization reports that more than 100,000 people die every year from lung cancer and other respiratory diseases due to asbestos exposure. And many more will die, because 125 million people are exposed to asbestos in their workplaces today and every day.

"VANCOUVER -- A Canadian environmental organization has launched a new automated system to draw public attention to the number and size of the oil tankers that transit Vancouver's Burrard Inlet."

"TORONTO -- More than a decade after the Walkerton disaster, much of Canada's tap water remains at risk from contamination despite initial progress in front-line monitoring and treatment, a new report concludes."

"Canada's Stephen Harper government is spending more than 60 billion dollars on new military jets and warships while slashing more than 200 million dollars in funding for research and monitoring of the environment.

Amongst the programmes now crippled is Canada's internationally renowned ozone monitoring network, which was instrumental in the discovery of the first-ever ozone hole over Canada last spring. Loss of ozone has been previously linked to increases in skin cancer.