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The Conversation USA

What is dirt? There’s a whole wriggling world alive in the ground beneath our feet, as a soil scientist explains

  • Written by Brian Darby, Associate Professor of Biology, University of North Dakota
imageDig into soil and you'll find rock dust but also thousands of living species.ChristinLola/iStock/Getty Images Plusimage

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com.

What is dirt? – Belle and Ryatt, ages 7 and 5, Keystone, South Dakota

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