US Department of Energy
U.s. Department of Energy: Energy 101: Cool Roofs
Learn how about an energy saving technique called cool roofs which are light in color and made "high solar reflectance" material in this video. [2:16]
US Department of Energy
U.s. Department of Energy: Energy 101: Daylighting
A video discussing an energy saving technique called daylighting where temperature is regulated by using windows and skylights. [2:43]