Tall or short? Thick or thin? UT study shows many factors affect arm, leg size

(University of Tennessee at Knoxville) For over 60 years, scientists have theorized that a person's body shape and size could be influenced by the climate of where they live. Now a new study from the University of Tennessee, Knoxville, suggests there's more to the equation. The paper is among the first to document how evolutionary selection has shaped variation in human limbs across the globe.