Deux ouvriers peignent une toiture en blanc
Global warming

Painting roofs and pavements in white: a remedy against heat waves?

This simple, solvent-free process, used from San Francisco to Melbourne, reflects 90% of the sun's radiation, making it easy to reduce inner-city temperatures by a few degrees.

With all these appealing arguments, why has the Greater Lyon metropolitan area, in France, decided to give up its experiment in covering the city's streets with "cool pavement", heat-reflecting white paint?

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