Did you know?
Mass of all the humans on Earth (358 billion kg) is 250 thousand x Mass of the SpaceX Falcon Heavy rocket (1.421 kg)
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Forest in Bhutan (2011) (32,800 km^2)
Yes, there's now a book based on these numbers. Oxford University Press: July 2018.
Click here to learn more about it.
Click here for Podcast: Andrew Elliott interviewed for New Books Network.