Quote:
Originally Posted by Hugh
As has been previously pointed out, this happened over centuries - we are accelerating the process.
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Devon island went from greenery to thick ice over a period of 9,000 years. That's a very big change which must have happened in shorter stages. Broken up into periods of a few centuries at a time is still large natural changes. Split the 9,000 years into just 30 chunks of 3 centuries, and you still have a large change over each 300 years.
Just because that found a plant that is 9,000 years old, doesn't meant that was when all plant life ended on the island. It might've happened just 3,000 years ago.