Did you know?
Mass of an alkaline D battery (135 g) is 50 x Mass of a table tennis ball (2.7 g)
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Estimated world population of Hooded Seal (662,000 individuals)
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.