By Bob Weber THE CANADIAN PRESS A new report from dozens of international scientists says it’s inevitable the Arctic will lose its entire summer sea cover at least once over the next generation and probably a lot more often than that. “It’s a threshold tipped,” said Pamela Pearson, one of the main editors of the State of the Cryosphere report delivered Monday at the COP27 climate conference in Egypt. “Loss of summer sea ice is now inevitable.” The loss, expected to happen at least once by 2050, spells the end of an entire ecosystem that has evolved for year-round ice cover. Its other effects, from disrupted weather around the globe to rising sea levels and ocean acidification, are barely beginning to be understood, Pearson said. “The consequences are unpredictable. We
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