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Climate scientists at the U.S. National Oceanic and Atmospheric Administration (NOAA) reported Thursday that Arctic temperatures are on the rise again. The sea ice extent has also fallen to one of the lowest levels on record, according to NOAA's annual Arctic report card, which was prepared this year by 69 researchers in eight countries. "A return to previous Arctic conditions is unlikely," wrote the scientists in the report. "Record temperatures across Canadian Arctic and Greenland, a...
- The navel or umbilicus.
- In Greek archaeology: A central boss, as on a shield, a bowl, etc.