Explains various changes in humanity's beliefs about the shape of the earth, from the flat earth theories of the ancients to the round earth theories which were proven true by the voyages of Columbus and Magellan.
A simple explanation of hair - how it grows, why dampness affects it, why its characteristics cannot be changed, how strong it is, and how it stretches.
Discusses some of the ideas and misconceptions about life in outer space and speculates on the existence of such life in light of recent space explorations.