Why Are You Alive – Life, Energy & ATP
https://www.youtube.com/watch?v=QImCld9YubE
What Do Alien Civilizations Look Like? The Kardashev Scale
https://www.youtube.com/watch?v=rhFK5_Nx9xY
Could Solar Storms Destroy Civilization? Solar Flares & Coronal Mass Ejections
https://www.youtube.com/watch?v=oHHSSJDJ4oo
Is It Too Late To Stop Climate Change? Well, it’s Complicated.
https://www.youtube.com/watch?v=wbR-5mHI6bo
Worst Nuclear Accidents in History
https://www.youtube.com/watch?v=Jzfpyo-q-RM
When Time Became History — The Human Era
https://www.youtube.com/watch?v=CWu29PRCUvQ
Geoengineering: A Horrible Idea We Might Have to Do
https://www.youtube.com/watch?v=dSu5sXmsur4
What if We Nuke the Moon?
https://www.youtube.com/watch?v=qEfPBt9dU60
What If Earth got Kicked Out of the Solar System? Rogue Earth
https://www.youtube.com/watch?v=gLZJlf5rHVs
What Are You Doing With Your Life? The Tail End
https://www.youtube.com/watch?v=JXeJANDKwDc