Scientific American reports:
Alaska is burning more than it has in the past 10,000 years.
That’s the finding of research released yesterday in the journal Proceedings of the National Academy of Sciences.
The study analyzed charcoal found in sediment cores from 14 lakes in the Yukon Flats region of the state to determine the frequency of past fires.
Over the last 3,000 years, the average fire frequency in the area was about 10 fires per thousand years.
In the last 50 years, the fire frequency has nearly doubled, up to 20 every thousand years, or one fire every 50 years.