Natural Selection - The process in nature by which, according to Darwin's theory of evolution, only the organisms best adapted to their environment tend to survive and transmit their genetic characteristics in increasing numbers to succeeding generations while those less adapted tend to be eliminated. I think of it like this, obesity, disease, handicaps, malformations, even homosexuality are all a process of Natural Selection. Obesity - Obesity contributes to many diseases, as well as a shorter life span than that of a 'normal' human. When you think of Obesity in the world, consider them to be of the percentage that natural selection will weed out in future generations. Disease - This one is self explanatory, although it is not always preventable, it does serve its purpose to kill off those not strong enough to thrive. Malformations - This one may be quite controversial, however those born with severe malformations (handicaps), without proper care, would die off in nature. This is especially true with animals in their natural habitat. Though we as humans take care of those born with birth effects, ultimately their life span will not be that long. Homosexuality - Two people of the same sex cannot conceive a child, though there are other means of doing it, I think of this as a great example of NS at work. Now to get to the point. When you think of the history of human beings (as far as we know it) we are constantly evolving and adapting to the environment in which we live in. Those in the past before us also did the same. But as technology evolves (it does play a crucial role in our environment) there also too is changes to natural selection. Perhaps I am different, but I think not. However, I look at death and famine, disease and obesity as a positive thing. The world is ever changing, and our population will change with it, or cease to exist. Now I believe natural selection isn't 100% natural, because we as a civilization have changed the environment ourselves, man made disasters, war, ect. My question to you, reader, is what is your take on all of it.