reading about the DC superheroes in comic books. During the Crisis on Infinite Earths, he gains powers like those of the Silver Age Superboy and helps to defeat the Anti-Monitor. However, his own world is lost and Superboy-Prime himself is confined to Limbo. In addition to official versions, other stories listed as "What Ifs" or imaginary stories which were not originally an official part of DC continuity. One example, Superman Red/Superman Blue was the subject of several story lines. The Silver Age version of the tale was an "imaginary story" in which Superman splits into two beings, one which marries Lois Lane, and the other marries Lana Lang, and both are happy. Both retained their powers, with one having all red removed from his costume and the other having all blue removed. In Superman #300, a story imagines what would have happened if Superman had landed in the middle of the Cold War, with both the U.S. and the USSR trying to capture the capsule as it is landing. Kent is a reporter for a worldwide news service, and takes the name Skyboy. Post-Crisis: 1986-present The Multiverse system was discarded in the aftermath of Crisis on Infinite Earths limited series (1986) by rebooting all of DC's various stories and continuities into one timeline taking place on a single Earth (later described as New Earth). A more modern adaptation of the mainstream "Earth-One" Superman debuted in John Byrne's The Man of Steel miniseries in 1986. The post-Crisis Superman was the Superman from 1986 to 2011. Superman's backstory was heavily revised and many Silver Age elements, such as his career as Superboy, were removed. Significant changes included a reimagining of all Kryptonians being genetically bound to Krypton, making it fatal for them to leave the planet. Jor-El devises a serum to counter this, which he administers to baby Kal-El. DC used this plot device to make Superman Krypton's sole survivor until this was retconned in the mid 2000s to introduce the post-Crisis Kara Zor-El. Krypton was also reimagined as an emotionless and sterile society where all their babies were grown in a birthing matrix as Kryptonians found sexual reproduction to be barbaric. Clark never becomes Superboy, with his powers manifesting gradually as he matures in age. His power level is also toned down to where he is no longer able to travel through time with his super speed, is not strong enough