Today, we have sophisticated building technology: we can calculate and simulate the environments and performance of the building, the thermal exposure of envelop, or the air flow through an urban space or structure.

There is an urgent need to stop subsidizing the fossil fuel industry, dramatically reduce wasted energy, and significantly shift our power supplies from oil, coal, and natural gas to wind, solar, geothermal, and other renewable energy sources.

All I know about thermal pollution is that if we continue our present rate of growth in electrical energy consumption it will simply take, by the year 2000, all our freshwater streams to cool the generators and reactors.

From solar to electric cars, from geothermal to reconfiguring the grid, the scale of investment needed in green technologies in order to meet whatever agreements on emissions reductions are finally agreed will be immense.

Problem with you Sangsters is you expect perfect. I never did. It just wasn't an option. You start liking boys in third grade? You know you're no Cossack's idea of the perfect son. Eighty percent of everything Dad's ever said to me involves either thermal units or ratchets, so he's not winning Father of the Year, either...But weirdly we're kind of happier than you guys. We're comfortable with the idea that we're screw-ups. Must be awful just figuring that out now.

All I know about thermal pollution is that if we continue our present rate of growth in electrical energy consumption it will simply take by the year 2000 all our freshwater streams to cool the generators and reactors.