Link above to BBC web site |
"Scientists say current concerns over a tipping point in the disappearance of Arctic sea ice may be misplaced.
"Danish researchers analysed ancient pieces of driftwood in north Greenland which they say is an accurate way to measure the extent of ancient ice loss.
"Writing in the journal Science, the team found evidence that ice levels were about 50% lower 5,000 years ago."
"Danish researchers analysed ancient pieces of driftwood in north Greenland which they say is an accurate way to measure the extent of ancient ice loss.
"Writing in the journal Science, the team found evidence that ice levels were about 50% lower 5,000 years ago."
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