Tackling climate change and improving energy security are two of twenty-first century's greatest challenges. In this book, Marilyn Brown and Benjamin Sovacool offer detailed assessments of most advanced commercially available technologies for strengthening global energy security, mitigating the effects of climate change, and enhancing resilience through adaptation and geo-engineering. They also evaluate the barriers to deployment of these technologies and critically review public policy options crucial to their adoption. Arguing that society has all technologies necessary for the task, Brown and Sovacool discuss options available today, including high-efficiency transportation, renewable energy, carbon sequestration, and demand-side management. They offer eight case studies from around the world that document successful approaches to reducing emissions of greenhouse gases and improving energy security. These include the Danish approach to energy policy and wind power, Brazil's ethanol program, China's improved cook stove program; and the U.S. Toxics Release Inventory. Brown and Sovacool argue that meeting twin challenges of climate change and energy security will allow us to provide energy, maintain economic growth, and preserve natural environment.