claim: Everybody knows that the Pacific island of Tuvalu is sinking. ...
evidence: Marine extinction intensity during the Phanerozoic % Millions of years ago (H) K–Pg Tr–J P–Tr Cap Late D O–S Sea ice, and the cold conditions it sustains, serves to stabilize methane deposits on and near the shoreline, preventing the clathrate breaking down and outgassing methane into the atmosphere, causing further warming.