A threatening email was sent early Wednesday morning to dozens of Jewish institutions across Canada, including several in Montreal, prompting an RCMP investigation.

The portion of water main pipe that broke last week, resulting in a geyser that flooded dozens of homes and businesses east of downtown, was expected to last another decade, according to an analysis ordered by the City of Montreal after the pipe's last inspection in 2018.

As heavy rainfalls multiply, scientists and urban planners have turned to centuries-old cartography to understand areas that could be vulnerable to flooding.