This book was originally published in 1996. At the time of publication, a number of unexpected and far-reaching events had transformed the world. In rapid succession the disintegration of the Communist bloc reconfigured international relationships, while the ending of apartheid symbolised human faith for a better future. AIDS ravaged developing countries, but it also reshaped scientific research and cultural attitudes towards sexuality. The revolution in genetic medicine coincided with increased rights for minorities and women, yet a growing sensitivity towards our environment means that millennial celebrations are overshadowed by forecasts of ecological catastrophe. In this volume, eight famous experts present their energetic commitment to improvement. These powerful essays enabled a deeper understanding of the challenges confronting modern society.