Obsolete architecture and a warming planet have tag-teamed, making our cities hotter. But new technologies and sustainable urban development strategies could soon change our fates, according to UNLV Architecture professor Steffen Lehmann.

Dusk is just as important as dawn. Those nighttime hours in the dark help provide a much-needed cooling effect that leverages our daytime highs, and minimizes the intensity of potentially lethal heatwaves in our cities. The problem is that the…