Degeneration would be the biggest threat for long living civilizations The idea of intelligent life would be one of the most interesting things in the world. The thing that we would not only ones in the universe is fascinating and at the same time scary. When we are thinking about the distant future there are multiple threats what can make our civilization one of the civilizations, what would be destroyed in the history of the Universe. One of the things, what is ever mentioned is the homogenization of the genetic material. If the civilization would live long enough, the entire population would turn to one individual, and the genetic material would be similar in that individual. That means that those organisms would be actually identical twins to each other. Degeneration of the threats is very interesting and scary threats, what we can face is the genetic degeneration, where the entire species turn to be like the homogenous group, where the entire population will be the same, and