Amid ongoing shifts world economic and political systems, the promise for future public health is more tenuous than ever. Will the today's economic systems sustain tomorrow's health? Will future generations inherit fair access to health and health care? The best hope for the health of future generations is the establishment of a well-grounded, global public health system for today. To that end, Global Public Health: Ecological Foundations addresses both the challenges and cooperative solutions of contemporary public health, all within a frameworkof social justice, environmental sustainability, and global cooperation. With an emphasis upon ecological foundations, this text approaches public health principles-history, foundations, topics, and applications-with a community-first perspective. By achieving global reach through cooperative, local interventions, this text illustrates that through the practice of publichealth we can also maintain the health of our world. Blending established wisdom with new perspectives, Global Public Health will stimulate better understanding of how the different streams of public health can work more synergistically to promote global health equity. It is a foundation on which future public health measures can be built andsucceed.