In a recent article, Oliver Milman reported that a team led by Dr. Leslie Field was up in Alaska spreading sand on a frozen lake. The researchers are hoping to find a way to slow sea ice melt.

Could this actually work?

Can sand save Arctic sea ice? Video by Michael Ruffolo for National Observer

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I suppose it's worth trying on a small scale, but isn't fresh ice a very good reflector of sunlight already?
Why add sand?