Few members of the general public are fully aware of the extent to which the
atomic age affects their everyday lives. For many, bombs and power plants are
their only associations with the term. The uses and benefits of radioactive
isotopes in medicine, agriculture, industry, and science are widespread, however,
allowing us to perform many tasks more accurately, more simply, less
expensively, and more quickly than would otherwise be possible. In many cases,
biological tracers for example, there is no alternative.