ScienceModernAtlantic Ocean / Europehigh confidence

The Atlantic Meridional Overturning Circulation (AMOC), an ocean-current system that helps keep Europe warm, is currently the weakest it has been in more than 1,600 years.

Notes on verification

Confirmed by peer-reviewed studies (Nature 2018, Nature Geoscience 2021) using independent proxy methods, plus corroboration from multiple reputable science journalism outlets and a research institute. [tier=gold indep_score=0.9 clusters=4 claim_tier=notable]

Sources