#198 – Sara Walker: The Origin of Life on Earth and Alien Worlds

Sara Walker is an astrobiologist and theoretical physicist
interested in the origin of life. Please support this podcast by
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code LEX to get $5 off EPISODE LINKS: Sara's Twitter:
https://twitter.com/Sara_Imari Sara's Website:
http://emergence.asu.edu/ PODCAST INFO: Podcast website:
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https://medium.com/@lexfridman OUTLINE: Here's the timestamps for
the episode. On some podcast players you should be able to click
the timestamp to jump to that time. (00:00) - Introduction (07:44)
- Origin of life (15:38) - Did aliens seed life on Earth? (20:48) -
What is life? (32:27) - Cellular automata (36:56) - The laws of
physics may change with time (46:41) - Nobel Prize for the origin
of life (52:01) - Is consciousness fundamental to the universe?
(1:03:19) - Life is the most deterministic part of physics
(1:05:54) - Free will (1:14:11) - How to detect alien life
(1:28:48) - How many alien civilization are out there? (1:35:32) -
Shadow biosphere (1:41:59) - UFO sightings (1:45:35) - Exponential
population growth of AI lifeforms (1:52:42) - The role of death in
life (1:56:45) - Advice for young people (2:02:31) - Meaning of
life