Did you know?
Estimate of population of Sumatran Elephant (2,600 individuals) is 2.5 x Number of passengers on an Underground train on London's Central Line (1,047 )
Tweet this comparison
Height of Mount Everest (8.85 km)
If this was a standard unit ...
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.