What Makes Us Human?

Is it that because we are made with the image and likeness of God, or is it because of the evolution process that we came from a monkey?

People still are debating with it, each side pounding their arguments to the other. I can still remember during my highschool years that Glenn had researched on it (I was doing research on Chemical and Biological warfare that time).

I am someone who always question about the existence of God. I am not doubtful, nor skeptic, nor agnostic. The question "What makes us human?" is still very vague to take. Even ultra-evolutionists doesn't have a concrete answer to that, and so as to the ultra-creationists that doesn't have a concrete explanation on how man came to exist.

For me, what makes us human is the fact that we think, react, and interact with each and every mankind living on earth. How about you? What makes us human?