Did you know?
Mass of space debris in orbit around Earth (5.5 million kg) is 500 x Mass of the Hubble Space Telescope (11,110 kg)
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Land used for permanent crops in Kenya (2011) (4,200 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.