Whether it is global warming or industrial pollution, the spread of deserts or the extinction of species, everyone knows we are facing massive environmental problems. The complex questions of what science, technology, and human imagination can do to reverse damaging trends need to be explored. The articles in this volume, organized by Linacre College within Oxford University, bring together diverse viewpoints and areas of expertise. Among the authors are the U.K.'s Secretary of State for the Environment, the Director of the Kew Royal Botanic Gardens, and a former head of the British Meteorological Office. After absorbing what they say, some readers may feel more concerned than ever while others will emerge somewhat reassured, but few will disagree that caring for our environment is an issue of pressing importance.