- Pop. of World (7.21billion)...more would be 250 x Population of Yemen
- Pop. of Russia (142.1million)...more would be 5 x Population of Yemen
- Estimated world population of Horses (58 million individuals)...more would be 2 x Population of Yemen
- Pop. of Istanbul, Turkey (14.16 million people)...more would be 1/2 of Population of Yemen
- Pop. of Belgium (11.57million)...more would be 2/5 of Population of Yemen
- Pop. of Tunisia (11.52million)...more would be 2/5 of Population of Yemen
- Estimated population of Red Kangaroo (2011) (11.5 million individuals)...more would be 2/5 of Population of Yemen
- Pop. of Benin (11.34million)...more would be 2/5 of Population of Yemen
- Pop. of Bolivia (11.31million)...more would be 2/5 of Population of Yemen
- Pop. of Somalia (11.26million)...more would be 2/5 of Population of Yemen
- Pop. of Hong Kong, China (7.3 million people)...more would be 1/4 of Population of Yemen
- Pop. of Laos (7.23million)...more would be 1/4 of Population of Yemen
- Pop. of Hanoi, Vietnam (7.23 million people)...more would be 1/4 of Population of Yemen
- Pop. of Hong Kong (7.21million)...more would be 1/4 of Population of Yemen
- Pop. of Baghdad, Iraq (7.18 million people)...more would be 1/4 of Population of Yemen
- Pop. of Serbia (7.08million)...more would be 1/4 of Population of Yemen
- Pop. of Bulgaria (7.06million)...more would be 1/4 of Population of Yemen
- Pop. of Changsha, China (7.04 million people)...more would be 1/4 of Population of Yemen
- Pop. of Papua New Guinea (7.03million)...more would be 1/4 of Population of Yemen
- Pop. of Denmark (5.81million)...more would be 1/5 of Population of Yemen
- Pop. of Central African Republic (5.75million)...more would be 1/5 of Population of Yemen
- Pop. of Santiago, Chile (5.74 million people)...more would be 1/5 of Population of Yemen
- Pop. of Riyadh, Saudi Arabia (5.68 million people)...more would be 1/5 of Population of Yemen
- Pop. of Kuwait (2.916million)...more would be 1/10 of Population of Yemen
- Pop. of Jamaica (2.812million)...more would be 1/10 of Population of Yemen
- Pop. of Bahrain (1.443million)...more would be 1/20 of Population of Yemen
- Pop. of Cabo Verde (568,000)...more would be 1/50 of Population of Yemen
- Number of words in Tolstoy`s War and Peace (564,000 )...more would be 1/50 of Population of Yemen
- Pop. of French Polynesia (290,400)...more would be 1/100 of Population of Yemen
- Pop. of Vanuatu (288,000)...more would be 1/100 of Population of Yemen
- Pop. of New Caledonia (282,800)...more would be 1/100 of Population of Yemen
- Number of Deaths resulting from the Atomic bomb dropped on Hiroshima, Japan in 1945 (146,000 )...more would be 1/200 of Population of Yemen
- Pop. of Aruba (116,600)...more would be 1/250 of Population of Yemen
- Number of US Military deaths in World War I (116,500 )...more would be 1/250 of Population of Yemen
- Estimated world population of Dall Sheep (115,000 individuals)...more would be 1/250 of Population of Yemen
- Pop. of Bermuda (71,200)...more would be 1/400 of Population of Yemen
- Number of US Military deaths in the Vietnam war (58,200 )...more would be 1/500 of Population of Yemen
- Pop. of Greenland (57,700)...more would be 1/500 of Population of Yemen
- Number of Estimated deaths in South Africa from Covid-19 to 1 June 2021 (56,600 )...more would be 1/500 of Population of Yemen

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.