Preloading

What Is Dust? An Expert Explains the (Gross) Truth

Aired on 09/22/2006 | CC tv-pg
In 2006, expert A.J. Jacobs, who had read all 32 volumes of Encyclopedia Britannica, appeared on the Oprah Show to answer a burning question: What is dust? Watch his answer to find out why you will never look at dust the same away again.
Watch OWN