Cosmos: A Personal Voyage S01 E04 Heaven and Hell

"If you wish to make an apple pie from scratch, you must first invent the universe."

A descent through the hellish atmosphere of Venus to explore its broiling surface serves as a warning to our world about the possible consequences of the increasing greenhouse effect. Then Dr. Sagan leads us on a tour of our solar system to see how other heavenly bodies have suffered from various cosmic catastrophes.