If you haven't seen the juice on your supermarket shelves or being sold in expensive bottles, you've probably seen it on TV or the Internet.
It's acai, the so-called "miracle" fruit from the Amazon. Now available in rejuvenating face creams ... and even in vodka.
Acai has been called the world's No. 1 superfood. Can one obscure fruit really be this good?
To find out, "Nightline" traveled all the way to the source -- the Amazon region of Brazil -- in search of the fruit with the name no one...Full Story