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Greenland Ice Reveals Volcanic Cause of Ancient Climate Shift

10/15/2025

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Summary

Story summary

A platinum spike in Greenland ice cores dating to about 12,800 years ago is linked to volcanic activity, not a meteorite impact.
The spike aligns with the onset of the Younger Dryas, underscoring how past climate triggers can inform future changes.
Studies point to Icelandic volcanic eruptions as a plausible source for the platinum.
The Laacher See eruption in Germany is ruled out because it contains minimal platinum.

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Story summary

A platinum spike in Greenland ice cores dating to about 12,800 years ago is linked to volcanic activity, not a meteorite impact.
The spike aligns with the onset of the Younger Dryas, underscoring how past climate triggers can inform future changes.
Studies point to Icelandic volcanic eruptions as a plausible source for the platinum.
The Laacher See eruption in Germany is ruled out because it contains minimal platinum.