While was taking a bath, Archimedes discovered the principles of density and buoyancy.

When Edouard Benedictus, a French scientist, was working in his laboratory, he dropped a glass bottle which had some plastic inside - and invented safety glass.

Columbus arrived in America while he was trying to reach the Far East.

Alexander Fleming discovered penicillin by accident while he was looking at some old experiments.

While Hiram Bingham was climbing in the mountains of Peru in 1911, he discovered the lost city of Macchu Picchu.

While Isaac Newton was sitting under apple tree, an apple fell on his head, and he understood gravity.

While Dr Harry Coover was trying to Invent a new kind of plastic, he made a very soft substance while stuck things together. It was Superglue.

While he was observing the Moon through his telescope, Galileo realised that it had mountains and craters.