Coral's Chilling Tale

摘要: At the end of Pleistocene epoch, peak last ice age, land that would become New York City lay hidden beneath a sheet more than twice height Empire State Building. However, researchers have found contradictory evidence about how low latitudes fared during age. Deep sea sediments seem to indicate tropical seas weathered glacial epoch with remarkable stability while continental record indicates marked cooling. This discrepancy is problem for climate because it raises possibility models may lack critical element will hinder their ability accurately predict future changes. studies an ancient coral species help. The occasionally incorporates strontium into its shell, situation which occurs frequently in cold water. Looking at ratio calcium coral, proposed surface waters off Barbados were 5[degree]C colder today. article discusses scientific debate set by this finding.