Did you know? World Land Speed record - human powered (144 km/h) is 2 x Top speed of an elk (72.4 km/h) Tweet this comparison
Top speed of a roadrunner ...
Top speed of a house mouse ...
Fastest speed attained by a human-powered watercraft ...
Top speed of a Grey-headed albatross ...
"This is a fun and riveting book. Written in an accessible and engaging way, it is unputdownable." Frost Magazine
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