Mount St. Helens back from the dead
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When Mount St. Helens erupted in 1980, every living thing in the blast zone was buried. However, life began to bloom again, and biologist Charlie Crisafulli has been documenting the return of plant and animal life. Alos, the mountain, like the wildlife, is coming back to life. NOVA presents a pioneering look at the interplay between biology and geology that may help scientists predict future volcanic eruptions.