Evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection. Why do species change and adapt? Because of environmental pressures and competition. Our 21st century environment has just undergone a dramatic change, and it hasn’t taken millions of years, the changes literally happened over night. So how is this new environment forcing us to change, to adapt, to evolve? How might we have to redefine ourselves in this new and unfamiliar world.