Last Update: 09/22/2026 at 11:33 PM EST
Snowball Earth Climate Dynamics
Coverage from EarthSky, Astrobiology, and others

Recent research uses Cryogenian varved rocks and climate modeling to show that Snowball Earth was not perfectly static: short- and long-term climate oscillations persisted when small areas of open ocean remained, while separate work examines how carbon-cycle processes may have controlled glaciation length.
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05/22/2026
The story is largely unchanged, but the framing has been tightened: the Garvellach varve evidence is now presented as the main reconstruction base, with the narrative more explicitly linking open-ocean refuges and carbon-cycle feedbacks to persistent Snowball Earth variability.
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Additional
2/20/2026 • Climate Science & Impacts • General
2/6/2026 • Climate Science & Impacts • General
2/19/2026 • Climate Science & Impacts • General
2/7/2026 • Climate Science & Impacts • General
1/1/1900 • Climate Science & Impacts • General
2/5/2026 • Climate Science & Impacts • General
