The giant Pioneer fire in Idaho is approaching 200,000 acres in size - a tragedy for the forest that has been consumed, and a source of immense amounts of pollution. However, every cloud has a silver lining - even if it is composed of smoke! From far to the north of the fire I was able to watch the towering pyrocumulus clouds boil up into the sky. In the evenings the sun would light up the smoke for tremendous sunsets.