Test Yourself

Which of these is the least numerous? ...

Estimated world population of Harp Seal ...

Population of Hanoi, Vietnam ...

Population of Chengdu, China ...

Population of Shanghai, China ...

Read all about it!

Is That a Big Number? - the book - is now available from all good booksellers.

"This is a fun and riveting book. Written in an accessible and engaging way, it is unputdownable." Frost Magazine

Click here to learn more about it.

Click here for Podcast: Andrew Elliott interviewed for New Books Network.

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