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Study Reveals 30,000-Year Decline in Arctic Sea Ice

11/7/2025

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Summary

Story summary

A study published on November 6, 2025, shows Arctic sea ice declined over 30,000 years, indicated by cosmic-dust traces in sediments.
Frankie Pavia from the University of Washington led researchers who analyzed sediment cores.
They found that less cosmic dust correlates with greater ice coverage, especially during last ice age.
As the climate warms, reduced ice increases phytoplankton nutrient uptake.
The study calls for more samples to investigate these changes.

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Story summary

A study published on November 6, 2025, shows Arctic sea ice declined over 30,000 years, indicated by cosmic-dust traces in sediments.
Frankie Pavia from the University of Washington led researchers who analyzed sediment cores.
They found that less cosmic dust correlates with greater ice coverage, especially during last ice age.
As the climate warms, reduced ice increases phytoplankton nutrient uptake.
The study calls for more samples to investigate these changes.