windows2universe.org

VREm TIL Over 2000 years ago, Eratosthenes of Cyrene managed to calculate the Earth’s circumference without ever leaving Egypt and he was accurate to within 2%
dMxr TIL that the vast majority (approx. 75%) of the world’s tornadoes occur in the central United States.
lYW7 TIL that Eratosthenes calculated the circumference of the earth in 240BC