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Mass of a Boeing 747-400 airliner (max takeoff weight) (397,000 kg) is 500 x Mass of a small passenger car (800 kg)
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Forest in Switzerland (2011) (13,000 km^2)
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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