Montreal health officials are blaming the heavy heat and humidity for at least six deaths in recent days.

A United Nations group is approving standards for measuring how much airlines need to reduce the growth of greenhouse-gas emissions from planes.

Federal documents echo earlier concerns that Canada's largest national park faces long-term threats that could place it on a list of endangered world heritage sites.

Climate change is already having a big impact — and Canadian governments urgently need to collect and publish data showing how safe their citizens are from floods, fires and other hazards, a federal advisory panel says. In a report Tuesday, the panel says basic information such as the percentage of poor Canadians who are living in high-risk areas, or the readiness of infrastructure for the change