Did you know? Time since the end of the Devonian geologic period (359 million y) is 2.5 x Time since the end of the Jurassic geologic period (145 million y)
Energy in an Olympic Javelin throw (360 J)
/fact/energy-in-an-olympic-javelin-throw
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"This is a fun and riveting book. Written in an accessible and engaging way, it is unputdownable." Frost Magazine
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