
♪ The autotrophs BEGAN to drool,
Neanderthals developed tools ♪
The Big Bang Theory Season 5, Episode 1

♪ The autotrophs BEGAN to drool,
Neanderthals developed tools ♪
The Big Bang Theory Season 5, Episode 5

♪ The autotrophs BEGAN to drool,
Neanderthals developed tools ♪
The Big Bang Theory Season 5, Episode 14

♪ The Earth BEGAN to cool
The Big Bang Theory Season 12, Episode 8

♪ The Earth BEGAN to cool ♪
The Big Bang Theory Season 5, Episode 24