Did you know?
Mass of a mature Holstein cow (680 kg) is 5 thousand x Mass of an alkaline D battery (135 g)
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Land used for permanent crops in Guinea (2011) (60.9 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.