US braces for second day of scorching weekend temperatures

Americans braced for a second—and equally scorching—day of dangerously hot weather Sunday, with daytime temperatures forecast to approach 100 degrees Fahrenheit (38 degrees Celsius) across a number of major US cities.

Islands in the sun: Heatwave gives cities that sinking feeling

Boffins call it a heat sink—a passive exchanger designed to dissipate heat—but when the sink is an actual city, its concrete and asphalt sweltering in the heat, it feels more like an oven to those who live and work there.

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