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المصري اليوم
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2 Daysالمصري اليوم
Source: المصري اليوم
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A study by the California Institute of Technology, published in *Science Advances*, found that smoke from fires in urban areas may contain more toxins than wildfire smoke. Smoke from the Eaton Fire in Southern California in January 2025 contained lead at concentrations more than 50 times higher and arsenic at concentrations three times higher. At the peak of building combustion, about 7 million people were exposed over a 24-hour period to airborne lead levels 80 times higher than normal. The health effects of these short-term exposure spikes are still being studied, and researchers caution that the elevated lead levels may be linked to the age and materials of the buildings that burned.
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