Book & DVD. The Department of Energy revived its investment in algal biofuels in response to the increased urgency of lowering greenhouse gas emissions and producing affordable, reliable energy, as well as the recognition that we will not likely achieve these goals via one technology pathway. Through appropriated dollars and the American Recovery and Reinvestment Act of 2009, the DOE is investing in a variety of research, development and demonstration projects that seek to tackle key technical hurdles associated with commercializing algal biofuels. This book examines the state of technology for algae-based fuels and documents the research and development challenges associated with producing them at a commercial scale.