biology allegedly is the study of life; but it's not. it is really the study of things that fit the definition of living. the study of the structure and function of these things. notice how this is not the study of life, but the study of material objects. not a bad thing, but not the same as life. it is easy to see how a complex, multi-cellular organism like humans are alive. what is more of a mystery are those tiny little red spiders that are the size of one of these letters that scurry about.
life, how it is possible that such things, on a such small scale (and even smaller scale), can have structure and function, move about, etc. still remains a mystery in my mind.