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All these other questions are so big and important but there's this little thing that has always bugged me so I have to ask: if dark colors absorb more heat than light colors, why do we make all our roads black? Wouldn't our cities be cooler if they didn't have all that asphalt absorbing the sun's energy?  Even if asphalt is naturally dark there has to be a way to make it lighter so it reflects more heat than it absorbs. I'm probably missing some key science detail, but it's something I've always been curious about. Thanks.

posted 2 years, 6 months ago
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