January is a not the best time to start a compost pile, but it’s a great time to learn about how compost works. This week I talk with two experts at the University of Pennsylvania, Tom Richard and Rick Stehouwer, about some of what goes on inside a compost pile and what happens when you add the stuff to soil. Tom and Rick give understandable explanations based in solid science to questions like why compost is the same all over the world, why it helps to tear newspaper up before composting it, and why it is that compost not only adds nutrients to soil, but helps soil hold onto them.
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