The Great Silence: Only 4 in 10,000 Galaxies May Host Intelligent Aliens
Extraterrestrial life capable of communicating through space interstellar space might not be able to develop if the home planet doesn’t have plate tectonics, and not even just the right amount of water and dry land. Plate tectonics is absolutely essential if complex life is to evolve, argue Robert Stern of the University of Texas at … Read more