breath indefinitely to remain underwater or space without adverse effects. He has a significant focus of his breath's intensity to the point of freezing targets by blowing on them. The "freeze breath" was first demonstrated in Superman #129 (1959).Action Comics #1 (1938) explained that Superman's strength was common to all Kryptonians because they were a species "millions of years advanced of our own". In the first newspaper strips, Jor-El is shown running and leaping like Superman, and his wife survives a building collapsing on her. Later stories explained they evolved superhuman strength simply because of Krypton's higher gravity. Superman #146 (1961) established that Superman's abilities other than strength (flight, durability, etc.) are activated by the light of Earth's yellow sun. In Action Comics #300 (1963), all of his powers including strength are activated by yellow sunlight and can be deactivated by red sunlight similar to that of Krypton's sun. Exposure to green kryptonite radiation nullifies Superman's powers and incapacitates him with pain and nausea; prolonged exposure will eventually kill him. Although green kryptonite is the most commonly seen form, writers have introduced other forms over the years: such as red, gold, blue, white, and black, each with peculiar effects. Gold kryptonite, for instance, nullifies Superman's powers but otherwise does not harm him. Kryptonite first appeared in a 1943 episode of the radio serial. It first appeared in comics in Superman #61 (Dec. 1949). Superman is also vulnerable to magic. Enchanted weapons and magical spells affect Superman as easily as they would a normal human. This weakness was established in Superman #171 (1964). Like all Kryptonians, Kal-El is also highly susceptible to psychokinetic phenomena ranging along Telekinesis, Illusion casting, Mind control, etc., as shown in Wonder Woman Vol 2 # 219 (Sept. 2005). A powerful enough psionic can affect either the psyche or microbiology of Superman to induce strokes or mangle his internal organs, as well as disrupt his mind and perceptions of the world, something a young power-amped Gene-Bomb meta showcased in Superman #48 (Oct. 1990). Supporting characters Superman's first and most famous supporting character is Lois Lane, introduced in Action Comics #1. She is a fellow journalist at the Daily Planet. As Jerry Siegel conceived her, Lois considers Clark Kent to be a wimp, but she is infatuated with the bold and mighty Superman, not knowing that Kent and Superman are the same person. Siegel objected to any proposal