I'm a big fan of parkour, aka free running, and have written about it here before on MNN, naming it a top green extreme sport.

I was blown away yesterday with a post on Boing Boing with a video from 1930 showing a dude running parkour. It's remarkable how close it is to its modern analog.

Compare that to modern day parkour.

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Shea Gunther ( @sheagunther ) is a podcaster, writer, and entrepreneur living in Portland, Maine. He hosts the popular podcast "Marijuana Today Daily" and was a founder of Renewable Choice Energy, the country's leading provider of wind credits and Green Options. He plays a lot of ultimate frisbee and loves bad jokes.