Why Extreme Rainfall Is Becoming More Frequent and Deadly

Relief personnel conduct a search and rescue operation after landslides in Wayanad, India on July 31.Photographer: Idrees Mohammed/AFP/Getty Images
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Torrential rains that triggered floods and landslides have killed hundreds of people and displaced millions across parts of Africa, Europe, Asia and the US in recent weeks.

The unprecedented deluges overwhelmed even communities accustomed to extreme weather and showed the limitations of the early-warning systems and emergency protocols established in many countries to avoid major loss of life.