It is an amzing game, but unlike many its because of it's creative value. What it lacks in its simple gameplay it more than makes up for in its creators. I, however, do not think it represents science, and they should stop talking about how its so scientific, and start showing off the creators!
Violence: In cell stage, there is watered down blood, but you can play through without harming anyone. In creature stage, you can hunt, but its not very violent. In tribal stage, you can fight with spears, axes and fire, but no blood. In civilization stage, you fight with vehicles, but you can see panicked citizens in the cities under attack. In space stage, you can kill cities, tribes, and even individual creatures.
Sex: Dancing under hearts, and some hippies mentions pregnancy.
Social Value: You can be peaceful, or violent.
Eduacational Value: No science as you mentioned ther was.
Commerciallism: None, but the CEO of EA has mentioned an interest in ingame advertising.
Drugs and alchohal(sp): None.