'Everyone should eat snow because it's really fun,' says Anne Nolin, a professor at the College of Earth, Ocean, and Atmospheric Sciences at Oregon State University. Nolin, who studies snow and ice in the climate system, says most snow is just as clean as any drinking water.
To make their way from a cloud to the ground, cold water molecules have to cling to particles of dust or pollen to form the ice crystals that then grow into snowflakes in a process called deposition. Plus, as snowflakes fall, they have a harder time picking up soot and other air pollutants than raindrops, which are better at picking up these particulates.
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