Unlike other challenges, the ones relating to transportation are the most important for you to tackle, because modifying your transportation habits will have the largest impact on greenhouse gas emissions. Here's why:

Each gallon of gas spent to propel the average car produces 19.564 lbs of CO2, which amounts to approximately one pound of CO2 per mile.

Let Someone Else Drive

How many ways can you avoid consuming fuel just to move yourself around each week?
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Use Person Power

One-quarter of all automobile trips in the United States are less than one mile long.
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Drive Smarter

Your car is responsible for emitting as much carbon dioxide a year as your entire house. So, improving your car's fuel efficiency is the single best thing you can do to prevent global warming.
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Buy A More Fuel Efficient Car

Minivans, SUV's, and pickup trucks now make up 51% of all U.S. vehicles. These vehicles get an average of 16 miles per gallon of gas, compared with a typical passenger car's fuel efficiency of 23 miles per gallon.
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Drive Less

Unless a store is one mile away or less, it's more energy-efficient to buy things on-line and have them delivered by truck than to drive to the store yourself.
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Fly Less

The single worst thing you can do to contribute to global warming is fly on a plane. Airplane travel is responsible for roughly 2 to 3 percent of the world's global warming emissions, even though only a small fraction of people fly.
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