Why the study of human size is important / Thomas Samaras -- Human scaling and the body mass index / Thomas Samaras -- Advantages of taller human height / Thomas Samaras -- Advantages of shorter human height / Thomas Samaras -- Body height and its relation to chronic disease and longevity / Thomas Samaras -- BMI and weight: their relation to diabetes, CVD, cancer and all-cause mortality / Thomas Samaras -- The obesity epidemic, birthweight, rapid growth and superior nutrition / Thomas Samaras -- Long-lived mutant, gene knockout and transgenic mice / Andrzej Bartke -- The evolutionary ecology of body size with special reference to allometry and survivorship / C. David Rollo -- Overview of research on giant transgenic mice with emphasis on the brain and aging / C. David Rollo -- Speculations on the evolutionary ecology of Homo sapiens with special reference to body size, allometry and survivorship / C. David Rollo -- Birthweight, height, brain size and intellectual ability / Thomas Samaras -- Impact of body size on resources, pollution, the environment and economics / Thomas Samaras -- Final remarks on human size, scaling and ecological implications / Thomas Samaras.