Book excerpt: A novel on the political madness of our time and the Internet’s deep workings, by the author of The Infernal One year after the president has plunged the world into nuclear war, a journalist takes refuge in the Twin Cities Metro Containment Zone. On assignment, she documents internet humor at the end of the world, hoping along the way to find the final resting place of her wife and daughter. What she uncovers, hidden amid spiraling memes and twitter jokes in an archive of the internet’s remnants, are references to an enigmatic figure known only as Birdcrash, who may hold the key to an uncertain future.