Chinese science -- Counting and the abacus -- Aqueducts, dams, and flood control -- Early bridges -- Water power -- Arabian science -- Making and using paper -- Viking voyages -- Wind power -- Advances in math -- Castles and bridges -- Magnetic compass -- Clocks and watches -- Guns and gunpowder -- Development of printing -- Voyages of discovery -- Copernicus and the universe -- Potatoes and tobacco -- Sailing ships -- Timelines.
