A first-of-its-kind study in Canada has revealed that building new homes in flood and wildfire-prone areas could cost billions and threaten affordability.

Heavy rain and mudslides have submerged towns, cut off roads and left at least one person dead in British Columbia, along Canada’s Pacific coast. The military was sent in to assist with evacuations.

Power outages and massive flooding have hit parts of British Columbia, Canada over the weekend. The heavy rainfall began on ...

The Columbia River Treaty, the framework for hydropower generation and flood control between the two countries, had been left ...