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Study: Ocean sediments support theory that comet impact triggered Younger Dryas cool-off

Analysis of ocean sediments has surfaced geochemical clues in line with the possibility that an encounter with a disintegrating comet 12,800 years ago in the Northern Hemisphere triggered rapid cooling of Earth’s air and ocean. Study: Ocean sediments support theory that comet impact triggered Younger Dryas cool-off
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Rzeczpospolita broke the news in Poland on Thursday, August 14, 2025.
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