This book is the first volume to review the full range of challenges--new and evolving--to food security. Books on food security tend to cover particular countries or types of crises but none to date have provided a general overview of both theory and practice in relation to today's evolving and emerging risks. The primary objective of this book is therefore to bring together these different perspectives on food security to provide a basis for a common understanding of the interplay of this range of risks and challenges. Bringing together chapters from leading academics across the discipline, the book focuses particularly on the social, political and institutional aspects of food security.