Book excerpt: Light-emitting reactions occur in some living organisms, and are also now extensively exploited by industry and various branches of biomedical science. Luminescence from the natural world, particularly from marine organisms, is increasingly being harnessed by genetic and chemical manipulation to enhance the quality of human life. This volume contains cutting-edge contributions from most of the world's leading researchers in this field. It presents an up-to-date compilation of the range of biomedical, strategic and ecological applications of chemiluminescence and bioluminescence. It documents and highlights the rapid advance in knowledge concerning both the mechanisms and the uses of luminescence, and covers all the important developments of recent years.