A NASA-led study confirms unprecedented changes in Earth’s water cycle due to human activities, impacting ecosystems and water resources globally. Data from 2003 to 2020 reveals significant shifts in freshwater availability and extreme weather patterns.

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• NASA study highlights dramatic changes in Earth’s water cycle from 2003 to 2020.
• Human activities like agriculture are key drivers of these shifts.
• Major effects include groundwater depletion, altered seasonal patterns, and more frequent extreme weather events.
• Study based on 20 years of data from multiple NASA satellites.
• Observations reveal earlier snowmelt, shifting growing seasons, and increased 100-year floods.
• Changes disrupt ecosystems, freshwater supplies, and agriculture.
• Earth system models must evolve to account for human impact on water cycles.
• Research aims to improve water resource management, especially in high-risk areas.
• Findings published in the Proceedings of the National Academy of Sciences.