Digging Into The Museum Of Dirt Just because Glenn Johanson has collected hundreds of dirt samples from around the world, doesn't mean he walks around in a cloud of dust like Pigpen in the Peanuts comic strip. Some 300 samples of dirt in small glass bottles are displayed on shelves in the lobby and conference room where he works. By Ross Atkin. How Dirt Got That Way Dirt expert Francis Hole, recommends that we thank the Earth every morning. Professor Hole is a retired pedologist from the University of Wisconsin in Madison.
Soil supports plant life, and plant life provides both food and oxygen for humans' use.
By Ross Atkin.