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5 Ways to Keep Cities Cooler During Heat Waves

Cities can be miserable during heat waves. All that concrete and asphalt soaks up the sun’s rays, pushing temperatures up even further. Tall buildings can block cooling breezes. Exhaust from cars and air-conditioners just adds to the swelter.

This is known as the urban heat island effect: A large city’s built-up environment can make it 2 to 5 degrees Fahrenheit warmer than the surrounding countryside during the day and up to 22 degrees warmer at night. That extra heat is becoming a serious public health problem. On average, 650 Americans die each year from heat-related causes, the Centers for Disease Control and Prevention estimates, and global warming is only expected to make things worse.

read more in www.nytimes.com

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