Defines drugs, discusses the different types and their effects on people when used or abused, and suggests ways of preventing or counteracting drug abuse.
A biography of astronomer Nicolaus Copernicus, who challenged the belief of his age that Earth was the center of the universe and proved that it is, instead, a planet orbiting the Sun.
Describes the critical events and timing which led to major scientific discoveries including Newton's laws of gravity, Lise Meitner's work with nuclear fission, and experiments with penicillin.
