I almost caused a bad accident recently.
Running on a beautiful morning, I was listening to my music as I ran. Tuning everything else out as I ofent do, I forgot how busy the intersection was that I was navigating. As I ran across the entrance to an interstate, a group of cars approached me from my right. And they weren't slowing down!
This article posted by Christine Luff on http://www.about.com/ reminded me of this valuable lesson, particularly when we're listening to music with earbuds.