"It keeps happening. Every summer, unprecedented heat surges through cities across the United States—in Washington, Oregon, and Idaho; in Illinois, Indiana, and Ohio; and in Maryland, Virginia, and New Jersey. Last week, a heat wave melted records in Texas with unrelenting highs well into the 100s for days. And just when residents need it most, the electrical grid fails. Every year, hundreds die from heat-related illness in the U.S., and thousands more end up in emergency rooms from heat stress. Compared to other weather-related disasters, the emergency response to extreme heat from U.S. leaders has been minimal. As a result, many places remain unprepared. How, then, do we make our cities more resilient?
The urban heat crisis is not confined to North America, of course. Extreme heat kills more people than any other climate disaster on the planet, including hurricanes, floods, and wildfires. In the U.K., temperatures are reaching 104ºF for the first time in recorded history, and the heat is stoking wildfires across Europe. In India, cities inhabited for centuries are now unlivable with highs of 123ºF. And, driven largely by carbon emissions from the developed world, climate change is making it worse. Heat waves are getting hotter, they’re happening more often, and they’re lasting longer. Currently, 2.2 billion people—that’s 30% of the world’s population—now experience life-threatening heat during at least 20 days of the year, and scientists predict that heat could threaten as many as 66% of human lives by the end of the century. Unlike more cinematic violence, heat is invisible, even as it’s more immediate and widespread. That also makes it more dangerous. Nothing but the massive reduction of fossil fuels will slow this trend."
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