The latest scientific study of the Greenland ice sheet concludes that melting will add at least 27 cm to ocean levels worldwide.
. But they don’t compare to what will happen if the Antarctica ice cap melts. Then the rise of the oceans will be measured in meters and yards, not centimeters and inches. If there is any ray of sunshine in the study, it is that if the world can implement the commitments made as part of the Paris climate accords in 2015, the final result of ice melt in Greenland will be closer to the 27 cm figure than the 78 cm number.
Not only is it difficult for people to gauge what effective efforts they might make, Weber says, but we seem to be genetically predisposed to misconstruing what other people think. At the national scale, these illusions can obstruct policy development. Writing in the journal, Weber and her research colleagues suggest that nearly all Americans have created a “false social reality” for themselves in which their beliefs about what their fellow citizens think about climate change are dead wrong.
One problem is the rise of online echo chambers. People who watch or read conservative news also have “greater misperceptions” about the scale of popular support, the authors write. When it comes to fast moving public policy issues, perception of public opinion can lag actual opinion by years or even decades.
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