It all started with a molecule Four billion years ago In the early open oceans and tidepools Before the life that we have come to know Insects, trees, and animals Life began in a soup of chemicals If you let millions and millions of years pass Through the tree of life you'll come to us at last Evolution takes its time and slowly Works its wild ways with endless beauty Evolution tells the greatest story It's the way all life on earth has come to be A simple start to everything A single-cell would come to bring Trilobites and other living things In the time of cambrian Life saw an explosion From single-cell to multi-cell And multi-cell to animal And animals began to crawl the land Then came the dinosaurs With dominance and mighty roars Who ruled the land for a hundred million years Then came an asteroid Almost all life was destroyed A quarter million years ago The ancestors of you and I The people you have grown to know Had finally arrived With our eyes and with our minds We learned so many things Looked deep within our past to learn Of how we came to be