Jelaskan Isi dari Billions and Billions: Thoughts on Life and Death at the Brink of the Millennium

Part I: The Power and Beauty of Quantification

4. The Gaze of God and the Dripping Faucet

6. So Many Suns, So Many Worlds

Part II: What Are Conservatives Conserving?

7. The World That Came in the Mail

8. The Environment: Where Does Prudence Lie?

10. A Piece of the Sky Is Missing

11. Ambush: The Warming of the World

13. Religion and Science: An Alliance

Part III: Where Hearts and Minds Collide

15. Abortion: Is It Possible to Be Both "Pro-Life" and "Pro-Choice"

16. The Rules of the Game

19. In the Valley of the Shadow

Untuk membantu penonton Cosmos membedakan "millions" dengan "billions", Sagan menekankan huruf "b" saat mengucapkannya. Sagan tidak pernah mengatakan "billions and billions". Publik tiba-tiba mengaitkan frasa ini dengan Sagan karena leluconnya sempat tampil di Tonight Show. Saat meniru Sagan, Johnny Carson mengatakan "billions and billions". Frasa ini pun mendapatkan bilangan fiktif khusus bernama Sagan.