Chapter
Debating the Shadow Biosphere
1:32:09 - 1:41:45 (09:35)
This podcast episode discusses the concept of the shadow biosphere, which suggests that there may have been independent life events that occurred on earth, and how it challenges current understanding of life as a planetary scale process.
Clips
The problem of life requires new thinking, as we must view ourselves as minds that exist within a system, rather than external observers of the universe.
1:32:09 - 1:33:39 (01:29)
Summary
The problem of life requires new thinking, as we must view ourselves as minds that exist within a system, rather than external observers of the universe.
ChapterDebating the Shadow Biosphere
Episode#198 – Sara Walker: The Origin of Life on Earth and Alien Worlds
PodcastLex Fridman Podcast
Theories form the basis of technologies and physical transformations in the world around us which is why it's important to build optimistic theories in order to ideate a more positive future.
1:33:39 - 1:35:24 (01:44)
Summary
Theories form the basis of technologies and physical transformations in the world around us which is why it's important to build optimistic theories in order to ideate a more positive future.
ChapterDebating the Shadow Biosphere
Episode#198 – Sara Walker: The Origin of Life on Earth and Alien Worlds
PodcastLex Fridman Podcast
The shadow biosphere theory suggests that there may have been multiple instances of the origin of life on Earth leading to independent forms of life, making the search for signs of alien life on Earth a worthwhile pursuit.
1:35:24 - 1:37:56 (02:32)
Summary
The shadow biosphere theory suggests that there may have been multiple instances of the origin of life on Earth leading to independent forms of life, making the search for signs of alien life on Earth a worthwhile pursuit.
ChapterDebating the Shadow Biosphere
Episode#198 – Sara Walker: The Origin of Life on Earth and Alien Worlds
PodcastLex Fridman Podcast
The chemistry of life has regularities that show planetary scale organization, which means individual units are not necessarily the fundamental unit of life.
1:37:56 - 1:40:09 (02:13)
Summary
The chemistry of life has regularities that show planetary scale organization, which means individual units are not necessarily the fundamental unit of life. The chemistry can be represented as a network and those networks scale with the same property shown by the planetary-scale phenomena of life.
ChapterDebating the Shadow Biosphere
Episode#198 – Sara Walker: The Origin of Life on Earth and Alien Worlds
PodcastLex Fridman Podcast
Some scientists speculate that there may be a "shadow biosphere" of microorganisms living deep in the earth's crust, distinct from surface life due to their unique chemical makeup and lack of access to sunlight.
1:40:09 - 1:41:45 (01:35)
Summary
Some scientists speculate that there may be a "shadow biosphere" of microorganisms living deep in the earth's crust, distinct from surface life due to their unique chemical makeup and lack of access to sunlight.