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#154 – Avi Loeb: Aliens, Black Holes, and the Mystery of the Oumuamua
Lex Fridman Podcast
The Risk to the Human Body From Cosmic Rays
The real issue that is often underplayed is the risk to the human body from cosmic rays. If you go to Mars, where there is no such magnetic field to block them, then a significant fraction of the brain cells in your head will be damaged within a year. I mean, it's quite possible that humans cannot really survive on the surface. Now, it may mean that we need to dig tunnels, go underground, or create some protection. This is something that can be engineered. And, you know, we can start from the moon and then move to Mars. That would be a natural progression. But it's a big issue that needs to be dealt with. So that's a
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