Atom Recycling

In On Intelligence I read that approximately 98% of your body's atoms are replaced approximately every 3 years. I also heard the same thing on NPR (National Public Radio) a few weeks ago. If you stop to think about this for a moment, it's pretty amazing and a little scary at the same time. Over the course of those three years (while your atoms are being replaced), you're general sense of self and your appearance remain fairly consistent, which is quite remarkable.