This publicity photo provided by Thomas Dunne Books shows the cover of 

This publicity photo provided by Thomas Dunne Books shows the cover of the book, "Extinction," by Mark Alpert from Thomas Dunne Books. (AP Photo/Thomas Dunne Books)
Associated Press
This publicity photo provided by Thomas Dunne Books shows the cover of the book, "Extinction," by Mark Alpert from Thomas Dunne Books. (AP Photo/Thomas Dunne Books)
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