Analyzing evidence: interpretations

Analyzing evidence to determine if a source is credible; the importance of analyzing bias

The story uncovered: the nuclear arms race

The discovery of nuclear fission in 1938 and the subsequent nuclear arms race;

The first three bombs in 1945; nuclear testing in the 1950s

Different views: ending the race

The steps taken by the United States, the Soviet Union, and other nations since

To limit the spread of nuclear weapons and their testing

Modern examples: history repeated

The current nuclear arms race between India and Pakistan, and the recent development of nuclear weapons by North Korea.