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Length of the longest canal tunnel (Rove Tunnel in France) (7.12 km) is 100 x Length of a Boeing 747 airliner (70.7 m)
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Forest in Nicaragua (2011) (33,000 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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