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        Ice Sheet in Antarctica Has Melted Past 'Point of No Return,' NASA Says

        A study released by NASA and other agencies offers the most definitive evidence that parts of the ice sheet in West Antarctica are melting and the damage is irreversible. The collapse will take more than a century, and the melting will lead to rising sea levels. Inform students on climate change with this PBS NewsHour video and educational materials from May 13, 2014. For further background and materials to support student understanding of the issue see the Teacher's Guide, Student Handout, and Informational Text in Support Materials.


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