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Earlier this summer, a historically massive dust cloud from the Saharan Desert traversed the Atlantic Ocean, bringing dense haze and sand to the Gulf of Mexico. Although ocean-crossing dust clouds are normal in summer months, the cloud this year was denser and nearly twice as large as that in 2019. Scientists aren't sure exactly what made 2020's plume so intense, but they do know that dust storms are increasing in the United States because of anthropogenic climate change. And as more and more humans are exposed to coarse particulate matter (PM2.5–10) in the air, understanding the health consequences of these storms will become increasingly important.
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