Glass is a godsend, allowing us to experience the outdoors without being exposed to the elements. But the material has one major pitfall: glass stretches out sunlight and turns it into heat. You know that if you've ever been stuck in a parked car exposed to direct sunlight. You also know it if you've got a greenhouse or glass room in your home. If that's the case, you may want to look into keeping your glass enclosure cool. The DIY experts at Stack Exchange can help. More »