John Dvorak

About The Author

John Dvorak, PhD, has studied volcanoes and earthquakes around the world for the United States Geological Survey, first at Mount St. Helens in 1980, then a series of assignments in Hawaii, Italy, Indonesia, Central America and Alaska. In addition to dozens of papers published in scientific journals, Dvorak has written cover stories for Scientific American, Astronomy and Physics Today.

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Books by John Dvorak

How the Mountains Grew

A New Geological History of North America

By John Dvorak

The incredible story of the creation of a continent—our continent— from the acclaimed author of The Last Volcano and Mask of the Sun.

Now in a revised paperback edition!

"Exuberant. Dvorak is a wonderful storyteller [and] challenges the conventional ...

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