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Human Activity Drives Historic Megadrought in Southwest U.S.

8/14/2025

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Summary

Story summary

Human activity is reshaping drought patterns, especially in the southwestern U.S., where a historic megadrought is unfolding. Once thought to be a natural cycle, the Pacific Decadal Oscillation is now tied to human-driven climate change. This alarming shift endangers ecosystems, economies, and food security, highlighting the urgent need for better water management and agricultural strategies.

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Story summary

Human activity is reshaping drought patterns, especially in the southwestern U.S., where a historic megadrought is unfolding. Once thought to be a natural cycle, the Pacific Decadal Oscillation is now tied to human-driven climate change. This alarming shift endangers ecosystems, economies, and food security, highlighting the urgent need for better water management and agricultural strategies.