The Utah Museum of Natural History is an institution of science. As such, we accept the theory of evolution, which the unifying concept of all biological sciences. While there remains ongoing lively debate about the processes of evolutionary change — that is, how evolution occurs —the overwhelming majority of biologists fully endorse the idea that all organisms on earth share a common ancestry and that life's unfolding has encompassed billions of years of time. Like gravity, evolution is one of the cornerstones of modern science, and it represents one of the key themes of our institutional mission.