In The Xenotext: Book 1, Christian B k outlined his plan to insert his poem, written as DNA, into a deathless bacterium, thereby writing a text able to outlive every apocalypse, enduring till the Sun itself expires. Now that the experiment has finally succeeded, Book 2 of The Xenotext situates that poem within the deep time of the cosmos. Our civilization has only very limited methods for preserving its cultural heritage against...