An action-packed look at past, present, and future threats to humanity’s survival—with an ultimately reassuring message that humans probably have a few more millennia in us.Scientists estimate that 99% of all species that have ever existed are now extinct. Whoa. So, it's not unreasonable to predict humans are doomed to become fossil records as well. But what could lead to our demise? Humans—with our big brains, opposable thumbs, and speedy Wi-Fi—may be capable of avoiding most of these nightmares. But we're also capable of triggering world-ending events. Learning from past catastrophes may be the best way to avoid future disasters. Packed with science, jokes, and black and white illustrations, this book examines the worst-case scenarios that could (but hopefully won’t) cause the greatest mass extinction—our own!