Special | 28m 48s
Soil is the top layer of the Earth. Without soil, there would be no life on our planet. There is a lot more to the study of soil than just dirt. On this month’s Science Trek, host Joan Cartan-Hansen and her guests, David Huber and Carla Rebernak, will answer students’ questions about soil and the environment.
Aired: 05/18/15Video has closed captioning.
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Major Funding Provided by the Laura Moore Cunningham Foundation