Did you know?
Mass of loaded MQ-9 Reaper military drone (4,760 kg) is 2 x Mass of an adult male White Rhino (2,400 kg)
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Age of oldest wooden wheel (5,150 y)
If this was a standard unit ...
"This is a fun and riveting book. Written in an accessible and engaging way, it is unputdownable." Frost Magazine
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