take a look at these buildings for thoughts and single forth and use a new delhi new york and hong kong. noticed anything. and these parts of the world life without air conditioning can be uncomfortable or downright dangerous. more than a dozen people have died and then during the last 2 months, due to a severe heat wave, this wave waste heat wait. but that brings us to our dilemma. technology needs lots of energy. in fact, cooling, building accounts for 10 percent over global electricity consumption. and that's bad news for global warming. so viciously, we call the indoors, but we want the outdoors, therefore generating the need for more cooling. but there are solutions, some traditional, some modern that don't have massive amounts of energy. nowadays, americans are still some of the most prolific users globally 90 percent of us households on an air conditioner and some of the hardest parts of the roof. it's not even 10 percent but other countries want to catch up. just look how much more energy some of these emerging economies are projected to use in the coming decades to colder homes