Rollin', Rollin', Rollin'...
Courtesy nebarnixThis week is National Bike-Walk to Work Week!

That means that in cities across the country people are being encouraged to take at least one trip to work or school on foot or by bicycle. Why? Pick your favorite reason! Mine include: biking and walking save me money, biking and walking are more fun than sitting in traffic, and biking and walking let me see things in my neighborhood up close. If you live in the Twin Cities you can even get free breakfast tomorrow at select locations in honor of Twin Cities Bike Walk to Work Day.

There's no doubt that biking and walking are good for your body, but are biking and walking more energy efficient than driving a car? Sure, you don't need to stop to fill up at a gas station, but something has to power your commute. According to most statistics, bicycles are the most efficient means of transportation in terms of calories, but I also came across this article about one UK environmentalist who claims that walking is worse for the planet than driving, since modern food production is so energy intensive - especially if, like me, you sometimes power your commute with coffee and bacon.

What do you think? What's the most energy efficient way to travel? How do you like to travel to school or work?

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