What is truly foundational to the universe?

Neil deGrasse Tyson and Chuck Nice welcome physicist and author Brian Cox for a discussion about emergence, particles, consciousness, and the very fabric of spacetime.  https://www.youtube.com/watch?v=tpWaAESy6RE  

Answering Questions About The Silurian Hypothesis, Mining on the Moon & Time https://www.youtube.com/watch?v=6hRjKCrTVrQ

https://en.wikipedia.org/wiki/Silurian_hypothesis 

https://www.cambridge.org/core/journals/international-journal-of-astrobiology/article/silurian-hypothesis-would-it-be-possible-to-detect-an-industrial-civilization-in-the-geological-record/77818514AA6907750B8F4339F7C70EC6

https://arxiv.org/abs/1804.03748