 painting pavement different colors. But I really like that there are a lot of different levels of solutions for this that can help us move towards cooler cities, more comfortable cities, and ultimately safer cities. I know what a green roof is, but what's a white roof? A white roof just reflects more heat. So any of these dark surfaces are going to hold the heat in. And it's better if the heat kind of bounces back into the atmosphere and doesn't linger around with us. And so that's what the