Reflections edition in April 2011: Al-Biruni

Before becoming a scientist, al-Biruni started studying astronomy, celestial objects, and all are still very hidden secret since his teenage years. He mentioned that the earth is round. This is reinforced by an opinion of them, the view from the end of the boat, the view will remain the same even though the boat was nearing the limit of first sight.

source: world-altering book 12 characters, echoes of human