Why We Need Earthquakes

Without them, the planet couldn't support creatures like us.
Dinesh D'Souza

A fresh way of looking at the problem of natural evil and suffering comes from Rare Earth, a 2003 book by Peter Ward and Donald Brownlee that traces the myriad conditions required for life to exist on any planet. In a sense, the authors—an eminent paleontologist and an astronomer at the University of Washington in Seattle—are discussing the "anthropic principle," which specifies the degree to which our planet appears fine-tuned for complex life. The concept is often used in Christian apologetics to show that our intelligently designed universe seems to point to an intelligent designer.

Ward and Brownlee ask: Why do natural disasters such as earthquakes, seaquakes, and tsunamis occur? All three are the consequence of plate tectonics, the giant plates that move under the surface of the earth and the ocean floor. Apparently our planet is unique in having plate tectonics. Ward and Brownlee show that without this geological feature, there would be no large mountain ranges or continents.

While natural disasters occasionally wreak havoc, our planet needs plate tectonics to produce the biodiversity that enables complex life to flourish on earth. Without plate tectonics, earth's land would be submerged to a depth of several thousand feet. Fish might survive in such an environment, but not humans.

Plate tectonics also help regulate the earth's climate, preventing the onset of scorching or freezing temperatures that would make mammalian life impossible. In sum, plate tectonics are a necessary prerequisite to human survival on the only planet known to sustain life.

Ehrman and others may not find this convincing. They might ask, "Why didn't God devise a world that didn't require plate tectonics and consequently one that wouldn't have to put up with earthquakes?" In other words, surely God could have made a universe that operated according to a different set of laws.

Ward and Brownlee's answer to this is as simple as it is devastating. Such a world could have produced life, but it surely could not have produced creatures like us. Science tells us that our world has all the necessary conditions for species like Homo sapiens to survive and endure.

Our planet requires oxygen and a warming sun and water in order for us to live here, and we appreciate this, even though we recognize that people can get sunstroke and drown in the ocean. So, too, it seems that plate tectonics are, as Ward and Brownlee put it, a "central requirement for life" as we know it.

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