The slipping tipping point

Back in ’07, there was alarming news coming out of NASA as to disappearing arctic ice:

Joey Comiso reports that this year’s large Arctic sea ice decline may be the tipping point for perennial ice and a recovery may no longer [be] possible in the foreseeable future.

I would love to know what Mr. Comiso thinks about this more recent report:

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.

They say changes to wind systems can slow down the rate of melting.

They argue, therefore, that a tipping point under current scenarios is unlikely.

Talk amongst yourselves.

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