Theme From The Big Bang Theory ——生活大爆炸主题曲（强烈推荐追剧啊）

Our whole universe was in a hot dense state
Then nearly fourteen billion years ago expansion started
Wait
The Earth began to cool
The autotrophs began to drool
Neanderthals developed tools
We built a wall
We built the pyramids
Math science history unraveling the mystery
That all started with the big bang