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Ancient Ocean Shifts Offer Clues for Future Sea Levels

4/27/2025

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Summary

Story summary

Earth's oceans have experienced dramatic shifts, including a staggering drop of 85 to 105 feet between 15 and 6 million years ago, driven by a slowdown in seafloor spreading. This ancient transformation not only altered ocean depths and chemistry but also holds vital clues for predicting future sea-level changes that could threaten coastal communities.

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Story summary

Earth's oceans have experienced dramatic shifts, including a staggering drop of 85 to 105 feet between 15 and 6 million years ago, driven by a slowdown in seafloor spreading. This ancient transformation not only altered ocean depths and chemistry but also holds vital clues for predicting future sea-level changes that could threaten coastal communities.