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Earth's hemispheres may have driven ice ages together
Original: Earth's hemispheres may have worked together to drive past ice ages
New research suggests the Northern and Southern Hemispheres did not cool in isolation during past ice ages, but worked together to drive global glaciation. The findings, reported by Phys.org, imply that climate changes in one hemisphere can trigger or amplify shifts in the other, reshaping how scientists understand the mechanisms behind Earth's repeated ice age cycles over millions of years.
Why now: Fresh research challenges the idea that ice ages were driven by one hemisphere alone, prompting discussion among climate scientists.
Evidence
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