This book will present an earth science-based overview of the challenges to sustainability (climate change, energy, food, and water security, etc.) and offer potential solutions. It will show how to use footprint analysis to estimate the environmental impacts of human activities, which then allows us to prioritize problems and their solutions. Many examples will be given of how to sustainably use natural resources, with sustainable management of common pool resources such as the atmosphere, oceans, and groundwater receiving special attention. It will also address economics and society, as these topics are thoroughly integrated into sustainability practices, shown through real world applications.