This week Magnum & Izzo discuss whether humans were the first advanced industrial civilization on Earth.

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🎸 Outro Song: "hypermusia | The Reprieve" (bandcamp page)

⏰ Timestamps:

(0:00) Intro

(1:11) Welcome/Drinks

(3:30) The Basics

(14:33) Primer on the Drake Equation

(19:17) Did Life Happen Twice on Earth?

(24:25) Drake Equation Contin.

(27:04) Shoutouts

(28:09) Problems Detecting the Past

(32:57) Detecting an Industrial Past: Stable Isotope Anomalies

(37:45) Sedimentological Record

(41:52) Extinction Events + Faunal Expansion

(42:10) Synthetics

(44:21) Radioactive Isotopes

(46:40) Right Angles + Big Brains

(49:28) Time Periods that Fit the Silurian Hypothesis

(55:48) Problems with the Silurian Hypothesis

(1:02:36) Producer Shoutout

(1:02:58) Final Thoughts: The Shocking Difficulty of Looking Backwards

(1:05:02) Did Life Happen Twice on Earth???

(1:07:55) Gears of War 3 + South Park Got It Right

(1:08:19) Only Your Search History Remains

(1:13:13) Outro Song: hypermusia | The Reprieve

📘 References:

1. The Silurian Hypothesis (Scientific Paper 2019)

2. The Silurian Hypothesis (General Info)

3. Drake Equation (Article)

4. Frank Drake (Link)

5. 4.1-Billion-Year-Old Life? (Scientific Paper 2015 + General Article)

6. PBS Space Time on The Silurian Hypothesis (Video)

7. Issac Arthur on The Silurian Hypothesis (Video)

8. Laetoli Footprint Trails (Article)

9. Isotopes (Link 1 + Link 2)

10. Anoxic Events (Link 1 + Link 2)