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Today, we’re discussing 5 plausible ways that the world could end, and I’m thrilled to be doing this as a 2-part collaboration with the one and only Isaac Arthur. Check out his video here:

Obviously there are many end-of-the-world scenarios out there, but for the purposes of these videos, we chose to focus on these five:

Grey Goo/Artificial Intelligence
Runaway Greenhouse Effect (Global Warming)
Comet or Asteroid Impact
Gamma Ray Burst
Death Of The Sun

From the self-replicating nanobots of John Von Neumann and K Eric Drexler to the gamma ray burst that caused the Ordovician Extinction, and how the death of Venus may signal our own future on Earth, our planet faces a multitude of threats that could end life as we know it.

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