Earth : a very brief history -- Mass extinctions : the first four of five -- Mass extinctions, continued : the fifth one got the dinosaurs -- Homo sapiens : not the only humans -- DNA bottleneck : that time humans almost went extinct -- Asteroids : incominggggg! -- Supervolcanoes : the blast from below -- Disease : teeny tiny threats like bacteria and viruses -- Over population : we live here, we eat here-until we don't! -- War : the ultimate self-destruct button -- Sun : we're gonna need stronger SPF -- Outer space : supernovae, gamma-ray bursts, aliens -- Global warming : who turned up the heat? -- 1.5°C to 2° C : just a wee bit warmer -- We're doomed (JK, how to save the planet people)

"A book for middle-school-aged children about previous extinctions and possible threats to humans, from volcanoes, to asteroids, to pollution and diseases"--

Ages: 8-12