carried "the Eradicator". Eventually this disagreement led to open violent conflict. A woman named Nyra, seeking what she considered a suitable mate for her son, Kan-Z, had one of her younger clones removed from stasis. The clone gained full sentience and was presented to society as a normal woman. When Kan-Z discovered that his fiancée was in fact his mother's clone, he killed the clone, then publicly killed his mother and also attempted his own suicide before being stopped. Kan-Z also publicly broadcast the entirety of his discovered findings as to what his mother had done across the entire planet. This key incident ignited the Clone Wars which lasted for 1,000 years, during which Kryptonian science was turned to warfare and several superweapons were developed and used. Among them was the device known as the Destroyer. Although the Eradicator's effects (altering the DNA of all Kryptonian lifeforms so that they would instantly die upon leaving the planet) were felt immediately, the Destroyer's effects were possibly more significant: by the time the Kryptonian government admitted defeat and abolished the clone banks, a pro-clone rights terrorist faction known as Black Zero had started the Destroyer (activated by Kan-Z himself), a device which functioned as a giant atomic energy gun, projecting massive streams of nuclear energy into the core of Krypton, intended to trigger an explosive chain reaction within Krypton's core almost immediately. The destruction (by Van-L, an ancestor of Jor-El) of the Destroyer eliminated the Post-Crisis city of Kandor in a fiery nuclear explosion, but it was believed at the time that the device had been stopped before it could achieve planetary destruction. Centuries later, Jor-El himself would discover that the reaction had only been slowed to a nearly imperceptible rate and it would eventually destroy the planet as intended. Destruction Though it survived the war, Krypton was scarred deeply by it. The formerly lush garden world was burned and blasted to a desert, and a sterile society—emotionally unlike its predecessor—emerged. The population lived isolated from one another in widely separated technological citadels, shunning all physical and personal contact, to the point that even family members would only interact with each other via communication devices. Procreation became a matter of selecting compatible genetic material to be placed within an artificial womb called a "birthing matrix"; the parents almost never met in person and never touched one another. The planetary government was deeply