The average pollen particle is less than the width of a human hair. Pollens can remain on your skin and hair for hours after spending time outdoors. Pollens can travel as far as 400 miles and up to two miles high in the air. Virga are streaks of water drops or ice particles falling out of a cloud and evaporating before reaching the ground. The average rainfall around the world is 40 inches per year.
Tires burning at landfills generate huge amounts of noxious air pollution.
This problem first came to national attention when hundreds of thousands of tires at an East Coast landfill in the United States burned for three years during the 1980s. Tire fires are difficult, and sometimes impossible, to extinguish. The average speed of an avalanche is 22 miles per hour. If it isn't here - it isn't Trivia.