Originally published in 1986. Nuclear power is now regarded as essential to survival in the twenty-first century. But the safety of nuclear power stations is a highly controversial topic, and where they will be sited is a most vital question. In this independent critique, based on four years of research, Stan Openshaw argues that reactor siting provides a simple means of offering additional, design-independent margins of safety. Reactor siting policies in the UK and USA are examined and it is suggested that UK siting practices need to be updated. The large number of potential alternative sites should be used to devise new planning strategies - strategies which will minimise both the residual health risks from accidents and the danger that a future change in public opinion might lead to calls for the closure of many existing sites on safety grounds.