From asteroids and artificial intelligence and from volcanic super-eruption to nuclear war, Bryan Walsh provides a panoramic view of the most lethal threats to the human race. Discussing such threats as climate change, pandemics, artificial intelligence, and hostile extraterrestrials, Walsh details the true probability of these catastrophes, the impact on our lives were they to happen, and the best strategies for saving ourselves. Going to the front lines of apocalypse prevention, Walsh interviews NASA asteroid hunters, disease detectives on the trail of the next killer virus, and the scientists working to head off disasters in biotechnology labs.