In the summer of 2019, a blistering heat wave swept across Europe. France was particularly hard hit. In some places, the temperature hit 46° Celsius (115° Fahrenheit). More than 1,400 people died, some in their own homes — buildings that were never designed to withstand the intense heat that has arrived with climate change.
A year earlier, a heat wave in Montreal, Canada killed 66 people. Eight in every 10 of them died in their homes. Meanwhile in the United States, more than 600 people die from extreme heat every year. Like those in France and Montreal, many of