Crowded or Lonely? The Statistics of Alien Life
33:12
Why We May Be Surrounded by Older Alien Civilizations
27:49
The Fermi Paradox Has An Incredibly Simple Solution
20:22
The Odds of Life - THIS CHANGED MY MIND
24:58
Why we might be alone in the Universe
30:18
How Big Is The Universe?
19:43
Do "Grabby Aliens" Solve The Fermi Paradox?
25:23
What the Hell Happened to Venus?
26:20