Did you know? Mass of a 10-pin bowling pin (1.5 kg) is 100 x Mass of a compact disc (CD) / DVD (15 g)
Estimated world population of Indian Rhinoceros (3,560 individuals)
/fact/estimated-world-population-of-indian-rhinoceros
Link
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.