Students from all continents cooperate and collaborate to reproduce one of the science's 10 most beautiful experiments of all time: Eratosthenes' measurement of the Earth's circumference. Eratosthenes 2016 eTwinning project : https://twinspace.etwinning.net/16393/home Eratosthenes website : http://www.eratosthenes.eu In 205 B.C., the Greek astronomer Eratosthenes, at the time Director of the Great Library of Alexandria in Egypt, proposed a purely geometrical method to measure the length of the
