Showing posts with label walking. Show all posts
Showing posts with label walking. Show all posts
Jan 27, 2011
Jan 10, 2011
Why Can't We Walk Straight?
"Try as you might, you can't walk in a straight line without a visible guide point, like the Sun or a star. You might think you're walking straight, but as NPR's Robert Krulwich reports, a map of your route would reveal you are doomed to walk in circles."
Sep 5, 2010
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