I just happened upon this video narrated by Carl Sagan. I always loved to watch anything Carl Sagan every spoke about, as no one ever quite put science and humankind's relationship to the Universe in better words.
This video puts life as we know it very much in perspective. We all tend to think of the world and life as they evolve, surround and effect us, in our small moments in time.
In his perfect words, Carl Sagan puts everything we humans have ever known all in "perfect perspective".