If you’ve felt like summers keep hitting differently, the data backs you up. A study published June 22, 2026, in Nature Climate Change found that 1 billion more people now face at least one day of extreme heat stress every year than in the 1970s. And it’s not just hotter days driving the trend.
Lead researcher Rebecca Emerton of the European Centre for Medium-Range Weather Forecasts found that the 10 warmest nights of the year are heating up roughly 0.58 degrees Fahrenheit per decade on average. This means your body gets fewer hours overnight to recover before the next round of heat hits....
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