chapter 1 Factors and Forces Influencing Human Variation -- chapter 2 Genetics of Body Weight and Obesity -- chapter 3 Diversity of Human Adaptability to Environments: A Physiological Anthropology Perspective -- chapter 4 Tissue and Cell Adaptability to Physical and Chemical Factors -- chapter 5 Human Adaptation to Natural and Artificial Light: Variation in Circadian Photosensitivity -- chapter 6 Effect of Environmental Light on Human Gastrointestinal Activity: From Laboratory Study to Fieldwork -- chapter 7 Cold Tolerance and Lifestyle in Modern Society -- chapter 8 Human Adaptability to Emotional and Intellectual Mental Stresses -- chapter 9 Impact of Pollution on Physiological Systems: Taking Science from the Laboratory to the Field -- chapter 10 Bridging the Gap between Laboratory Trials and the Reality of the Human in Context -- chapter 11 Geography, Migration, Climate, and Environmental Plasticity as Contributors to Human Variation -- chapter 12 From a History of Anthropometry to Anthropometric History -- chapter 13 Growth and Maturation: Interactions and Sources of Variation -- chapter 14 Bone Health and Body Composition Measurement: Challenges Imposed by Variability -- chapter 15 Research Designs and Statistical Methods in Both Laboratory and Field Settings -- chapter 16 Impact of Natural Environmental Stressors on Physiological and Morphological Processes: Methodological Approaches in the Field and Laboratory.