Where are all the aliens?! This is the essence to the Fermi Paradox. It's most popular solution is the "Great Filter." What is the obstacle that life and/or intelligent species are unlikely to survive? Let's discuss.

00:00 Cold Open
00:18 Introduction
00:48 History of the Fermi Paradox
02:48 Fermi Paradox Explained
03:55 Drake Equation Explained
07:04 The Great Filter
09:56 Rare Earth Hypothesis
10:53 Geologic Time in Galactic Years
14:48 Evolution of Intelligent Life
17:03 Conclusions
19:11 Poll Results
19:47 Outro
20:10 Featured Comment

Nick Lucid - Host/Writer/Editor/Animator
Natalie Wells - Researcher
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VIDEO ANNOTATIONS/CARDS

What is Life?
   • What Makes You ALIVE? Is Life Even RE...  

Cosmic Time:
   • Cosmic Time is UNIMAGINABLY HUGE! Let...  
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Kurzgesagt on Fermi Paradox:
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OTHER SOURCES

General Background:
https://www.seti.org/project-ozma
https://www.seti.org/drake-equation-i...
https://www.aip.org/history-programs/...
https://www.lanl.gov/discover/publica...
https://www.osti.gov/biblio/5746675-w...

Details and Facts:
https://mason.gmu.edu/~rhanson/greatf...
https://www.technologyreview.com/2008...
https://asd.gsfc.nasa.gov/blueshift/i...
https://exoplanets.nasa.gov/discovery...
https://www.scientificamerican.com/ar...
https://naturalhistory.si.edu/educati...
https://www.britannica.com/topic/Homo
https://www.britannica.com/topic/Homo...

Scienfic Papers:
https://www.ncbi.nlm.nih.gov/books/NB...
https://ui.adsabs.harvard.edu/abs/201...
https://arxiv.org/abs/1806.02404
https://doi.org/10.2307/2709100
https://doi.org/10.1089/ast.2014.1247

Books:
https://openstax.org/details/books/as...

"Intelligent Life in the Universe." by I. S. Shklovskii & Carl Sagan (1966)
https://books.google.com/books/about/...

"Is Anyone Out There?" by Frank Drake & Dava Sobel (1992)
https://books.google.com/books/about/...

"If the Universe Is Teeming with Aliens ... WHERE IS EVERYBODY?: Fifty Solutions to the Fermi Paradox and the Problem of Extraterrestrial Life" by Stephen Webb (2002)
https://books.google.com/books/about/...
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LINKS TO COMMENTS

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IMAGE CREDITS

Heavy Bombardment (Bennu's Journey):
https://svs.gsfc.nasa.gov/cgi-bin/det...

Los Alamos ID Badge Photos:
https://www.lanl.gov/about/history-in...

Herbert York:
https://commons.wikimedia.org/wiki/Fi...

Frank Drake:
https://repository.aip.org/islandora/...