evolution needs to speed up

Certainly, countless species have adapted to past climate fluctuations. However, their rate of change turns out to be painfully slow, according to a study by Professor John Wiens of the University of Arizona.

We found that, on average, species usually adapt to different climatic conditions at a rate of only by about 1C per million years, Wiens explained.

“But if global temperatures are going to rise by about four degrees over the next 100 years as predicted by the Intergovernmental Panel on Climate Change, that is where you get a huge difference in rates. What that suggests overall is that simply evolving to match these conditions may not be an option for many species.”

Either evolution speeds up 10,000-fold, which is an unlikely occurrence, or there will be widespread extinctions.

The Guardian, 14 Jul 2013

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