Team of contributors, with various areas of specialty, joins Dr. Mader. Susanna Longenbaker, Kimberly Ippolito, and Linda Smith Staton have joined Dr. Mader in revising the 11th edition of Human Biology. Case studies have been added to every chapter. The case study is introduced on the chapter opener and is revisited 3 times throughout the chapter. Two new boxed readings have been added – Historical Focus and Have You Ever Wondered?