remarkable. in the canadian province of alberta, massive wildfires are raging. almost a million acres on fire. almost a major dozen fires in all. 10,000 canadians have been evacuated and are on the run. there s enough smoke to turn day into night in the affected areas. here is where we come in and the satellite imagery of this is stunning. from montana east to maine as far as south as north carolina, for days, the smoke has been flowing down over the united states. in the new york area, for example, if you know what to look for, it is noticeable. it keeps the sky from becoming that deep blue marble oen a sunny day and instead gives the sky a faint gray sheen. it s more pronounced the farther north you go. it s very pronounced at sunset. spare a thought for the canadians and the fire fight and those on the run suffering a