Santa’s reindeer may have a new obstacle to contend with this year. Visibility. For The 1st Time In Recorded History, Smoke From Wildfires Reaches The North Pole. Smoke from the Siberian fires “blankets the sky for about 2,000 miles from east to west and 2,500 miles north to south, the report noted. Smoke from those fires has even been recorded as having traveled more than 1,864 miles to reach the North Pole — an unprecedented distance.”

+ WaPo: Siberia’s wildfires are bigger than all the world’s other blazes combined.

+ And that’s saying something, since there are lot of big fires from Greece to NorCal. Here’s a look at some of the biggest.

+ Meanwhile, nearly 200 million in U.S. under heat advisories.