"Bison calves have been born in Alberta's Banff National Park for the first time in 140 years, Parks Canada officials said on Tuesday, marking a milestone in attempts to reintroduce a wild herd to the area."

"Canada's food regulator has found traces of a controversial pesticide in nearly one-third of food products — and residue levels above the acceptable limits in about four per cent of grain products."

"Canada is warning the Trump administration that a "Buy American" plan for U.S. oil and gas pipelines could have an unexpected casualty: coal country."

"New climate change evidence from recent government studies could affect the coming legal fight over President Trump’s revived permit for the Keystone XL pipeline."

"With no rollback in Alberta tar sands production, Canada's emissions remain on an upward slope, a new report says."

"The U.S. State Department has signed and issued a presidential permit to construct the Keystone XL pipeline. That reverses former President Barack Obama's 2015 decision to reject the controversial pipeline."

"ExxonMobil announced Wednesday that it had wiped off its books all 3.5 billion barrels of tar sands oil reserves at one of its projects in Canada. Because of recent low oil prices, the company said none of those reserves can be considered economical according to the accounting rules of the Securities and Exchange Commission."

"A Globe review shows water treatment plants are failing on reserves across Canada. For every system the government fixes, plenty remain in a shambolic state."