One of my less testable ideas for sure, but during my dog walk this afternoon I saw again how much discomfort salting streets and sidewalks causes our four legged friends. The general idea would be some kind of non-toxic biodegradable material, that during the day time becomes some color that will convert as much solar energy into heat as possible, while not being aesthetically unappealing. At night this material would magically become transparent, to reduce the potential for ice formation.
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