cooling

Turn off lights when leaving rooms.

Dry laundry outside when weather permits.

Buy only high-efficiency products and appliances.

Use a programmable thermostat to automatically adjust home temperature.

Install insulation and seal home air leaks and save up to 20% on heating and cooling costs (energystar.gov).

At the time, I'll admit I was a bit skeptical of the idea of actually being able to heat your home without burning some sort of fuel on-site such as natural gas, propane or even wood in a wood stove. This seemed especially unlikely in a climate like Minnesota's. I later visited my dad's house in the winter after his system was installed and found that it was actually quite comfortable.

It's 10 a.m. on a Saturday and I'm cooking an egg on the sidewalk, not in Death Valley but in St. Paul, and in a solar oven. The pace of solar cooking allows me to parent, write and ponder our civilization's future without burning my egg. I am using no natural gas and producing no carbon dioxide in the process. But the sun is not always available and a crispy solar pizza is still a dream.