This book introduces the lay reader to the ecological risks associated with transgenic organisms. Genetic engineering could make a valuable contribution within agriculture, although the initial promise of more abundant food, produced in an environmentally friendly manner, is not being fulfilled. Instead the technology is being promoted at the expense of sustainable alternatives that have fewer environmental and social costs.

The principles of ecology -- Microorganisms -- Transgenic crops -- Invasion -- Genetic pollution -- Impact on non-target species -- Engineering solutions? -- Trees -- Fish -- Assessing ecological risk -- Diversity -- The precautionary principle.