Rarely a day goes by that I don't hear people complaining about how much money they're spending on gasoline. Indeed, filling up costs three times what it did just a couple years ago; it's understandable that people are upset.

So how can we reduce our costs of getting around? This week, I'll address the best strategy--driving less. Next week, we'll look at how to get better mileage from our cars.

Some recommendations:

Is it anything like them green conferences?

• "In spite of persistent claims to the contrary from green advocates, 86% of respondents believe that it costs more to build a green building — and not just by a little." — High Perceived Cost of Green Persists, Says Survey (January 1, 2008)
• "The report, the most exhaustive cost-benefit analysis of green building ever undertaken, found that green buildings have an average 0 to 2% increase in first cost over their conventional counterparts, but that they wil

I have a little treat for Firefox and Internet Explorer 7 users: the BuildingGreen.com Search Plugin. With the plugin installed, you can search BuildingGreen.com directly from the search bar in the top right corner of your browser. In the course of a day, I often have to reference a few case studies. The search plugin allows me to get to the case study I need almost immediately. Same goes for an article, green topic, product, etc.

Let us conservatively say that a Prius goes 40 miles on a gallon of gasoline. After taking into account the 20 lbs CO2 released by burning a gallon of gasoline, 40mpg amounts to two miles per pound of CO2 emission.