Greg Egan was born on August 20, 1961, in Perth, Australia. His novels are: “Quarantine”, “Permutation City”, “Distress”, “Diaspora”, “Teranesia”, “Schild’s Ladder”, “Incandescence”, “Zendegi” and “Orthogonal: Book One: the Clockwork Rocket”. Among his great works there’s also the novella “Oceanic”.

Gregory Dale Bear was born on August 20, 1951 in San Diego, California. Among his greatest hits in science fiction there’s the novelette “Blood Music”, the novels “Eon”, “The Forge of God”, “Moving Mars”, “Darwin’s Radio” and many others. He won several Hugo and Nebula awards.