Soon gray or blue roads? Here’s why colorful infrastructure could be an answer to global warming

Heat, a major cause of death

“Here in Phoenix, the number of people who die of homicide each year is roughly equal to the number of people who die of heat“says David Hondula of the “Heat Response” program in Phoenix, the fifth largest city in the United States.

A compound intended to reflect heat

So using a product composed of asphalt, water, an emulsifier, polymers and recycled materials, Applied on kilometers of roads, the city intends to reflect the rays rather than absorb them.

And according to the first studies, its application allowed a difference of 10 to 12 degrees during the day compared to traditional asphalt.

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