A powerful, early-season Nor’easter is sweeping through the Northeast this weekend, bringing heavy winds, coastal flooding threats, and the threat of freezing in some of the region’s largest cities.
A new interactive map and groundbreaking database allows people in the world’s largest metropolitan areas to track their air pollution exposure, along with their region’s biggest sources of ...
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I tracked the world's biggest cities over time
Explore the history of the world's largest cities from 3000 BCE to modern times. This video presents estimations based on ...
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