I just finished another good book. Tony Orb takes us to the precipice in a new book that explores existential risk. He looks at natural risks like asteroids, comets, supervolcanic eruptions, stellar explosions, brightening of our sun, and orbital dynamics. He then explores those risks stemming from human activity (anthropogenic). These include nuclear weapons, climate change, environmental damage, pandemics, unaligned artificial intelligence, nanotechnology, biotechnology, and back contamination (from space microbes). The remainder of the book focuses on quantifying risks and safeguarding humanity. I highly recommend the book for those looking well into the future and focused on humanity. I have added the book to my library. Here is the Amazon abstract.