Discussion Questions: Secrets in the Salt

• Why is the elevator in this video described as a time machine?
• What physical processes explain the formation of the salt layer deep under the surface of Earth?
• Why were the scientists so excited about the discovery of cellulose in the salt layer?
• Where would you find cellulose today?
• What evidence for conditions on Earth (even before the time of the dinosaurs) do you find most convincing? Interesting? Explain.