Global heating is turning cities into death traps
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Cities Are Becoming Climate Death Traps https://newrepublic.com/article/158537/cities-becoming-climate-death-traps 17 July 20 A new era of heat waves is here. We aren’t ready. As the coronavirus pandemic continues throughout the United States, another deadly pandemic comes out to strike in the summer: extreme heat. Year after year, more people are dying because it’s simply too hot. As of right now, both this country and others lack even an accurate way of counting those deaths—let alone a comprehensive plan to reduce them. Thanks to climate change, it’s about to get much worse.
For the past week, the American South and Southwest have been experiencing record-breaking temperatures. The National Oceanic and Atmospheric Administration has predicted above-average heat for nearly the entire U.S. this summer. Unprecedented, early-summer heat waves roasted the Middle East in May and Siberia in June, setting the latter on fire. Arizona had its earliest-ever hundred-degree heat wave in April—and another 110 degree heat wave in May. Spain endured 105 degree heat this month. When the heat index, a “feels-like” combination of temperature and humidity, reaches 104 degrees Fahrenheit indoors or out, human body temperature risks rising above the typical roughly 99 degrees Fahrenheit. When body temperature rises above 104 degrees, the consequences can be fatal within 30 to 60 minutes. “Heat-related deaths are notoriously difficult to track because the role of heat isn’t always obvious. One 2017 study found that extreme heat can kill people in 27 different ways,” Juanita Constible, senior advocate, climate and health at the National Resources Defense Council, told me. “If someone dies of a heart attack during a heat wave, there’s a good chance that’s how their death will be recorded by officials, even if high temperatures were the trigger.” Many scientists argue that official heat-death counts underestimate substantially. According to the World Health Organization, 166,000 people died due to heat waves between 1998 and 2017, but the true figure may be far higher. In the U.S., the Centers for Disease Control and Prevention only count deaths where heat illness is explicitly noted, so the official CDC count of heat-triggered deaths sits at just around 600 per year. Epidemiologists estimate that the real figure may be closer to 12,000—20 times higher than the official count. Climate change is making heat waves longer, hotter, and more deadly. Scientists estimate that 80 percent of record-breaking heat waves would not have occurred without human-caused warming due to greenhouse gas emissions. And urban areas, in particular, face special risk of heat deaths because of the heat island effect, in which dark pavement, roofs, and concrete absorb additional heat, making temperatures much hotter than the reported weather in any given city. In the U.S., heat deaths have more than doubled in Arizona in the last 10 years. Last year, a dangerous heat wave hit while storms left residents in the D.C. and New York City metro areas without power. Power outages can be deadly in a heat wave because without air conditioning, many people can’t cool off. In two heat deaths in a 2018 Arizona heat wave, the deceased were found indoors with a broken air conditioning unit that they couldn’t afford to fix. “Some people won’t use their air conditioning because they’re afraid of the bills,” Patricia Solís, executive director of the Knowledge Exchange for Resilience at Arizona State University, told National Geographic. “They think they’re OK without it, but that’s how people die.” “There are huge policy gaps in the U.S. with respect to extreme heat protections,” Rachel Licker, a senior climate scientist at the Union of Concerned Scientists, told me. “We found that without real action on climate change, by midcentury more than 250 cities across the U.S. are projected to experience 30 or more days with a heat index above 100 degrees Fahrenheit. This includes many cities that historically haven’t experienced this level of extreme heat.” |
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