#151: Okay - the past couple days of clouds were a nice break from the hot weather. But love it or hate it... that L.A. heat is always just right around the corner. Controlling urban heat is a major issue: it touches everything from health, to the environment, to your wallet. And running the AC all day can cost a pretty penny, assuming you're not one of the 20% of Angelenos who live without AC.

This is where cool roofs come in. It's L.A.'s new-fangled solution that got its start a couple thousand years ago in the Mediterranean, and is now required by law for all new roofs in the city.

Join LAist climate reporter Erin Stone as she takes HTLA host Brian De Los Santos down to Watts. The neighborhood received a grant to install free cool roofs, AND solar, for local residents.