Did you know?
Mass of the biggest Redwood tree (1.2 million kg) is 250 x Mass of loaded MQ-9 Reaper military drone (4,760 kg)
Tweet this comparison
Estimated world population of Siberian Roe Deer (1 million 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.