A journey around the United States in search of the truth about the threat of earthquakes leads to spine-tingling discoveries, unnerving experts, and ultimately the kind of preparations that will actually help guide us through disasters. It’s a road trip full of surprises.

Earthquakes. You need to worry about them only if you’re in San Francisco, right? Wrong. We have been making enormous changes to subterranean America, and Mother Earth, as always, has been making some of her own… . The consequences for our real estate, our civil engineering, and our communities will be huge because they will include earthquakes most of us do not expect and cannot imagine-at least not without reading Quakeland. Kathryn Miles descends into mines in the Northwest, visits the South to see what the Army Corps of Engineers in Memphis is learning about the next major US quake, uncovers the consequences of an earthquake in the Northeast rupturing pipes underneath a nuclear power plant, and interviews the people around the country who are addressing this rising threat. She maps out what will happen and what we can do about it.

As Miles relates, the era of human-induced earthquakes began in 1962 in Colorado after millions of gallons of chemical weapon waste was pumped into an underground dump in the Rockies. More than 1,500 quakes over the following seven years resulted. The Department of Energy plans to dump spent nuclear rods in the same way. Evidence of fracking’s seismological impact continues to mount… . Humans as well as fault lines built our unstable ground.

What will happen when Memphis goes offline as a result of an earthquake along the unstable Reelfoot Fault and takes FedEx and its two-million-package-a-day business with it? FEMA has estimated that a modest 7.0 magnitude quake (twenty of these happen per year around the world) along the Wasatch Fault under Salt Lake City would put a $33 billion dent in our economy. The Ramapo Fault runs beneath both the Apollo Theater in Harlem and the Indian Point nuclear reactor. When the Fukushima reactor melted down, tens of thousands were displaced. If Indian Point blows, ten million people will be displaced. How would that evacuation even begin?