Sand sample (IMAGE)

Desert Research Institute

Sand sample

Caption

A new pilot study by a team from DRI exposed samples of clean sand to smoke from burning Jeffrey pine needles and branches, then analyzed the time it took for water droplets placed on the sand surface to be absorbed -- a measure of water repellency. After exposure to smoke, water droplets sometimes remained on the sand surface for more than 50 minutes without soaking in.

Credit

Vera Samburova/DRI

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