I was having a bit of a walk yesterday and was meandering from grassed areas and crossing several roads. As soon as I hit tarmac, waves of heat arose to hit me. It made me wonder how much of an effect all our roads are having on the planet's albedo.
All that black absorbs heat from the sun, contributing to the warming of Earth. If we used a whitening agent in tarmac, I wonder by how much this could offset global warming.
Our preoccupation with grey slate rooftiles only add to the problem too, although modern houses have red or orange slates, which are an improvement.
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