Three Ways to Destroy the Universe
https://www.youtube.com/watch?v=4_aOIA-vyBo
Death From Space — Gamma-Ray Bursts Explained
https://www.youtube.com/watch?v=RLykC1VN7NY
What Are You?
https://www.youtube.com/watch?v=JQVmkDUkZT4
The Fermi Paradox II — Solutions and Ideas – Where Are All The Aliens?
https://www.youtube.com/watch?v=1fQkVqno-uI
The Fermi Paradox — Where Are All The Aliens? (1/2)
https://www.youtube.com/watch?v=sNhhvQGsMEc
The Last Light Before Eternal Darkness – White Dwarfs & Black Dwarfs
https://www.youtube.com/watch?v=qsN1LglrX9s
The Most Efficient Way to Destroy the Universe – False Vacuum
https://www.youtube.com/watch?v=ijFm6DxNVyI
Is Reality Real? The Simulation Argument
https://www.youtube.com/watch?v=tlTKTTt47WE
Why Black Holes Could Delete The Universe – The Information Paradox
https://www.youtube.com/watch?v=yWO-cvGETRQ
Optimistic Nihilism
https://www.youtube.com/watch?v=MBRqu0YOH14