The legendary photo of Albert Einstein's tongue, one of the most famous images of the 20th century, will be auctioned with an estimated value of $40,000.

Tongue out, hair a mess, mischievous look: the photo of the famous Albert Einstein was taken on March 14 ... decided to offer the photo to newspapers. And so it was that Einstein's picture made its ...

Albert Einstein is one of the most recognized and well-known scientists of the century. His theories solved centuries-old problems in physics and rocked even non-physicists' view of the world.