Dig It: the Secrets of Soil December 4, 2010

There are more living creatures in a shovel-full of soil than human beings on the planet, yet more is known about the dark side of the moon than about soil. These are just a couple of the fascinating facts visitors can learn from the new temporary exhibition "Dig It! The Secrets of Soil," will be on display October 2 - December 26, 2010.