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Erosion: why it happens and what to do about it
by Joy Livingwell
Erosion is a worldwide problem that causes major environmental damage, including lost agricultural productivity and polluted waterways, and costs billions of dollars per year.
A nation that destroys its soils, destroys itself.
-- U.S. President Franklin D. Roosevelt, 1937
Part 1: Why erosion happens (20 photos)
Pictures tell the erosion story. How did California get its landslide problem? Why are serious floods becoming more common worldwide? What factors really favor erosion?
Part 2: Protecting and growing soil (15 photos)
Find out why most fixes for erosion fail. See what works to heal even severely degraded landscapes.