Gr 9 Up These titles pack a ton of useful research information into small packages. The organization will appeal to researchers with limited prior knowledge, as the books begin with “At a Glance” summaries and then expand to chapter-length discussions. Chapters pose questions (“How Do Biofuels Affect the Environment?”), explore the issues in a clear narrative, and conclude with sections of primary-source quotes, compact facts, and informative illustrations. Deforestation feels like the odd man out, but it clearly explains the problems with the use of wood as a fuel, and describes efforts to change that trend.