The human brain is squishy, jiggly, and weighs approximately three pounds. Yet it is the most complex thing in the known universe. Discoveries about the human brain have led to extraordinary medical treatments, and scientists are learning more and more about this small yet vital organ every day. Titles will captivate both teen and tween readers as they do a deep exploration of interesting topics from the worlds of sports, the arts, science, history, and more. Each book features 8 chapters, with accessible text written at a reading level of 2.5 and below. Fascinating sidebars and facts are presented in the text, along with graphics including charts, tables, and infographics. Each book includes a glossary with key words and definitions to support readers.