Antarc­tica’s wor­ry­ing re­treat

The Week (US) - - News 21 -

Warm­ing ocean water in Antarc­tica is melt­ing much more un­der­wa­ter ice than pre­vi­ously thought, new re­search sug­gests— a dis­cov­ery that could prompt a re-eval­u­a­tion of pre­dicted sea-level rises. Be­tween 2010 and 2016, a team from the Univer­sity of Leeds in the U.K. used satel­lite data to mea­sure the sur­face height of about a third of the con­ti­nent’s ocean-fac­ing glaciers. This al­lowed them to mon­i­tor the “ground­ing line,” the point at which ocean, ice, and bedrock meet; when a glacier’s

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