Fang Yuhang wakes from a deep sleep to find himself surrounded by snow and ice beneath a world transformed. What happened to Earth? At the end of the Cretaceous, 65 million years ago, the fifth mass extinction wiped out 98% of all species, including the dinosaurs. Primitive humans survived the struggle of natural selection and finally stepped onto the stage of history. Estimates suggest that roughly 62 million years separate the start of each cycle of mass extinction. Millions of years have passed, and the sixth mass extinction quietly began in the 21st century... Will humanity disappear just like the dinosaurs? What species will take humanity's place?
