Eratosthenes, born in 276 BC out of the town Syene, was an ancient Greek scholar who was educated in philosophy and mathematics. He is most well known for his discovery on the measurement of the circumference around the earth with great accuracy. Some of his other achievements include producing the first map of the world which included meridian line and parallel lines. He was able to mark the equator and the size of the polar zones. He also invented geography which we use today. He invented an efficient method to discover prime numbers. Overall Eratosthenes was a well rounded scientist and contributed a lot to our civilization.
