Written for academicians, policymakers, and students, this reference addresses fundamental questions about food security: the ability to physically and economically obtain basic food needs. The authors examine whether the food produced today will be hampered by climate change, food and fuel competition, or land use policy changes. The reference also analyzes and interprets current trends and emerging challenges to provide policymakers with the necessary information to ensure adequate responses at local and international levels. It highlights opportunities for problem solving through technology, management and international institutions. The book also includes a section on data collection, theory, and reliability.