Climate Science Experiment: How Reflective Walls Keep Buildings Cool

What design elements help keep buildings cool? In this video, Alex Dainis explores how reflective zigzag walls can help make buildings more eco friendly. This is because these walls cast heat back towards the ground and the sky. She demonstrates this with an easy at-home experiment: take a piece of cardboard and paint sections black, and also cover other sections with aluminum foil. After 30 minutes in the sun, the sections covered in aluminum foil should be the coolest!