There was once a time when we didn’t worry about energy, trash or sprawl. We left the lights on just to be safe; we threw it in the trash to get it out of our house, and we built our home away from the city to give us a sense of privacy. Now, the growing scarcity of energy resources and land has made us think a bit more about our impact on this earth. We’ve learned to harness the sun’s energy, build energy-efficient buildings, reduce our waste stream and increase urban density. So what’s next? LEED In the building design