Following the publication of Superman: Birthright in 2003–2004, Luthor's history is altered (and the new canon is quickly referenced in both Superman comics and the series Superman/Batman that begins in 2004). In the new history, Luthor is only a few years older than Clark Kent and his family moves to Smallville when he is a teenager. Possibly abused by his father Lionel, and alienated from others by his intelligence and his ignorance of certain social cues and behaviors (he does not understand why gifts are given on birthdays without a promise of payment of some kind), Lex only finds friendship with Clark, impressed by the young man's knowledge though also finding him naive. Luthor discovers kryptonite meteors in Smallville and uses the radioactive mineral as a power source for his experiments. When Clark sees the machine and feels ill from proximity to kryptonite, Luthor mistakes his reaction to mean the young man doesn't believe in the experiment, that he also thinks Lex is lying or "crazy" as others do. The machine then explodes and Luthor survives but loses his hair as a result of radiation. Years later, his scientific research, largely based on his ideas about alien life, results in a small fortune that he uses to create LexCorp. When Superman appears in Metropolis, Lex is angered the man won't bow to his control and takes it very personally that a powerful alien, the kind of companion Luthor had often hoped for and believed would see him as a peer, instead looks on him with disapproval and moral judgment. This, along with Superman interfering with his criminal agenda and openly disrespecting Luthor in front of the media, motivates Lex to humiliate and destroy the alien hero.