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 virus -- 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 : aliens, supernovas, gamma-ray bursts -- Global warming : who turned up the heat? -- 5-2° Celsius : just a wee bit warmer -- We're doomed (JK, how to save the planet people).
Summary:
"A book for middle-school-aged children about previous extinctions and possible threats to humans, from volcanoes, to asteroids, to pollution and diseases"-- Provided by publisher.
This resource is supported by the Institute of Museum and Library Services under the provisions of the Library Services and Technology Act as administered by State Library of Iowa.