karel says:

kesse teeb pargi editi nii et ühtegi saltot pole :S

Aleks says:

The substance played a part in at least one major plot-line during the course of the program.

It was not until 1949 that comic book writers incorporated kryptonite into their stories, as both a convenient danger and weakness for Superman and to add an interesting element to his stories. Kryptonite is most commonly depicted as green in coloring, with a few exceptions; it was red in its first appearance in Superman #61 (November 1949).[2] When Superman followed the time trail of a piece of red rock that weakened him, he was able to trace his origin back to Krypton for the first time. Other colors of kryptonite, having different effects, began to show up frequently beginning in late 1950s comics, reaching a peak in appearances in 1960s Superman series.

Kryptonite, in its first comic appearance (Superman (volume 1) #61 in 1949), was quite rare. It came to earth inside a single meteorite from the exploded planet Krypton. Superman captured the two small pieces of kryptonite, one from a fake swami (pretending to ‘hex’ Superman with it) and another he purchased from a jewelry store, and threw them into Metropolis’ river. Over time, kryptonite was depicted as being so abundant that many ordinary criminals kept a supply as a precaution against Superman’s interference. In several accounts, it was explained that the explosion of the planet Krypton had opened a “dimensional warp” (similar to a wormhole in modern theoretical physics) which allowed the vehicle carrying the young Kal-El to reach Earth in a relatively brief time, and a large amount of planetary debris had also passed through this “warp” and emerged near Earth at virtually the same time, accounting for the seemingly improbable abundance of kryptonite