Did you know? Mass of an adult male Bengal Tiger (220 kg) is 2 x Mass of an ostrich (approx) (111 kg)
Pop. of Saint Petersburg, Russia (5.19 million people)
/fact/population-of-saint-petersburg-russia
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.