#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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EPISODE LINKS:
Sara’s Twitter: https://twitter.com/Sara_Imari
Sara’s Website: http://emergence.asu.edu/


PODCAST INFO:
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podcast
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– Medium: 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