"Ontario's climate change plan, which will provide billions of dollars in subsidies and incentives to businesses and homeowners, was greeted with cautious optimism Wednesday by environmentalists and businesses."

"Manitoba's cosmetic pesticide ban was supposed to keep weed killers like Roundup out of the battle against pesky yet harmless weeds, but a CBC News investigation found store after store flouting the rules."

"Some 2,000 residents of wildfire-ravaged Fort McMurray, Alberta, will not be able to return home this week as planned because of the risks posed by debris and contaminants including 'caustic' ash, Alberta Premier Rachel Notley said on Monday."

"A cloud of noxious particles brewing in the air above the Alberta oil sands is one of the most prolific sources of air pollution in North America, often exceeding the total emissions from Canada’s largest city, federal scientists have discovered."

"Evidence of a heart disease that has devastated commercial fish farms in Norway has been detected in British Columbia."

"Some crude producers restarted operations on Tuesday in Canada's energy heartland as a mass evacuation of the Fort McMurray oil town entered its fourth week, though cool weather and light winds were helping firefighters dampen the blaze."

"Regulator admits risks but recommends Trudeau government approve project to ramp up shipping of tar sands crude via Salish Sea tribal fishing grounds".

"The first genetically modified food animal has been approved for sale in Canada."

"Ontario has passed legislation creating a cap-and-trade system to fight climate change, which the government predicts will add $5 a month to home heating bills and 4.3 cents to the price of a litre of gasoline, or $8 a month on average."

"WASHINGTON -- The nation's top foresters on Tuesday warned of another hot, dry and costly wildfire season in 2016 with global climate change, droughts and more people living in the woods leading to more acres and more homes burned in more states."