Ancient clam shells help scientists study ocean currents’ stability

Scientists are using centuries-old clam shells to study the Atlantic Ocean’s circulation system, which could face collapse due to climate change.

Sarah Kaplan reports for The Washington Post.

In short:

The Atlantic Meridional Overturning Circulation (AMOC), vital for global climate regulation, could shut down due to warming and Greenland ice melt.
Arctica clam shells, which record centuries of oceanic conditions, provide new insights into past changes in AMOC and potential future tipping points.
Researchers warn the AMOC is showing signs of instability that could have significant global impacts, including extreme weather and sea level rise.

Key quote:

“You can tell it is losing stability. The environment is really struggling to maintain equilibrium.”

— Beatriz Arellano-Nava, climate researcher at the University of Exeter

Why this matters:

The AMOC’s collapse could lead to severe weather disruptions, coastal flooding and agricultural instability, affecting billions of people. Studying clams’ ancient records offers a rare glimpse into the ocean’s history, helping scientists predict and potentially mitigate future climate crises.

Learn more: Scientists predict collapse of key Atlantic Ocean current by 2057

www.washingtonpost.com

Ancient clam shells help scientists study ocean currents’ stability

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