Natural selection is a process which affects every species on Earth, including humans. Many people believe that as members of modern, technological societies we are immune to natural processes because we can modify our environment to suit our needs. This program illustrates how natural selection continues to affect us all in fundamental ways that will determine our future survival as a species. Included in the program is a brief explanation of natural selection, examples of how natural selection is operating all around us, how natural selection has affected human evolution and how it is still affecting our daily lives. The program concludes with the reciprocal view of how modern human society is affecting natural selection processes in the environment, and the consequences for the future of life on Earth.