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Science
Peter Veals, Professor of Atmospheric Science, University of Utah

Olympic skiers and snowboarders are competing on 100% fake snow – the science of how it's made and how it affects performance

Snowmaking machines blow cold water, which freezes before it hits the ground. Alexander Uhrin/iStock via Getty Images

The winter Olympics conjure up images of snowy mountain ranges, frozen ice rinks and athletes in cold-weather gear. And for good reason. Winter Olympic venues have often been in places that receive an average snowfall of 300 inches per year or more.

However, barring some extremely anomalous weather patterns, the mountains surrounding the snow events for the Beijing Winter Olympics will be tones of brown and green and nearly devoid of snow. The region typically receives only a few inches of snowfall in each winter month. This means that basically all of the snow the athletes will be competing on will be human-made.

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