Dr Dirt’s K-12 Soil Science Outreach
and SO much more
Soil is the foundation of all terrestrial ecosystems and because it is always underfoot, it is often overlooked and nearly always underappreciated.
Soil Science is STEAM!
Dr. Dirt has a passion for telling others about Soil and has been developing simple activities to demonstrate the importance for more than 25 years.
Activities and educational information about soil, because Soil Is Awesome!
Have you ever made a soil you can eat? Try Dirt Pudding, Dr. Dirt Style!
Want to make your own Dirt Shirt?
Soil is an effective environmental filter and helps purify water as a three-way filter: physical, chemical and biological. As a physical filter, sand grains have rough edges which help capture wastes and large suspended in water are too big to pass through the small pores in soil.
Have you ever wondered why you cannot build a sand castle with dry sand?
Why can you build a sand castle with wet sand, but too much water causes it to collapse?
What is quicksand?
Go here to learn the story of your State Soil.
(All 50 states + Guam and Puerto Rico.)
What about the story of that aggregate? It is an aggregate from a poorly drained soil: the gray areas represent an anaerobic (reducing) environment, the black is topsoil transported down by a crawdad, and the orange surrounding it is from the aerobic (oxidizing) environment created as oxygen coming down from the surface through the crawdad burrow.
Updated: 16 July 2026