0
500
1,000
1,500
America
2
Samuel de Champlain was a French Explorer. He made several expeditions to North America before…
Clair Patterson was a geochemist born in Mitchellville, Iowa, United States. He graduated from…
Europe + Africa + Middle East
4
Eratosthenes of Cyrene was a Greek mathematician, geographer, poet, astronomer, and music…
Claudius Ptolemy was a Greco-Egyptian writer of Alexandria, known as a mathematician,…
Avicenna is the Latinate form of Ibn-Sina. He was a Persian polymath regarded both in Europe…
Abraham Ortelius (Abraham Ortels) was a cartographer and geographer, generally recognised as…
Asia + Oceania
2
Zhang Heng was a Chinese astronomer, mathematician, inventor, geographer, cartographer,…
Nikolai Mikhaylovich Przhevalsky also transliterated Przewalski, was a Russian geographer of…