What are 'cool roofs,' and how do they work?

Summers are getting hotter every year. When it comes to adapting to a hotter planet, in the United States, it's cities that are taking the lead. In Atlanta, they've passed a nation-leading "cool roof ordinance."

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Hosted by Meghna Chakrabarti, On Point is a unique, curiosity-driven combination of original reporting, newsmaker interviews, first-person stories, and in-depth analysis, making the world more intelligible and humane. When the world is more complicated than ever, we aim to make sense of it together. On Point is produced by WBUR.