Someone wrote in [personal profile] ysabetwordsmith 2020-10-21 03:36 pm (UTC)

Would depend on how clear the air is, wouldn't it? Moisture or high dust or pollution numbers would cut the usefulness. Still. . .

They used a crude version of this (among other things) in "Sand Doom" by Murray Leinster (recommended. I always liked his Colonial Survey-books best)

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