Kryptonite is a huge weakness of superman and other kryptonians. Kryptonite is the left over remains of the planet krypton that have gone through a radiation field correct? If this is true than how does every household name in DC obtain such a rare commodity? People like Bats and Lex obtain it because they are super rich, but how do people such as the joker, and other non rich villains obtain it?

They either find it or steal it.

@arturocalakayvee: I was thinking where would you just find a piece of a broken planet from a different solar system that happened to go through a radiation field.

@trueking95: They explain it quite well in the comics. Debris or meteorite size chucks fall into Earths atmosphere and land on the planet.

How much of Kryptonite got on Earth in New-52 are still remain to be seen, but in Pre-New-52 it was rather common and widespread, so…

@sanohibiki said:

How much of Kryptonite got on Earth in New-52 are still remain to be seen, but in Pre-New-52 it was rather common and widespread, so…

It just never made much sense to me that chunks from a blown up planet in a different solar system somehow found its way to earth, but i guess thats comics. lol

Lex Luthor with all his incredible knowledge and remarkable intelligence should be able to cook synthetic Kryptonite and kill Superman with it in my opinion. It would be fun if they made a story where Lex starts peddling kryptonite to Superman's enemies and then at some point there would be so much Kryptonite in the world that Superman could no longer live on earth

During the post crisis there really was a lot of kryptonite I agree, but there was also that kryptonite meteor that fell during the time luthor was the president.

But now in the New 52 the "CLAIM" that there are only a few places you can find kryptonite:

1. Mettalo's power source ( which was used by Ultra Man, which means it no longer exists )

2. The kryptonite Luthor has ( Also taken by Ultra Man, which means it no longer exists )

3. Kryptonite man, I mean he is made out of it

4. Batman's little ring

5. That big piece Fire Storm made for Amanda Waller

And that should be it. I mean the Crime Syndicate confirmed that there is no more green K on our heroes earth.

@archizoom:

there would be so much Kryptonite in the world that Superman could no longer live on earth

That was already done and dealt with.

@sanohibiki: How did Superman get out of that predicament?

@archizoom said:

Hiro Okamura released his miniature robotic spiders into atmosphere. Self-replicating, they’re build enough of themselves to clean Earth’s atmosphere from Kryptonite within an hour.

@sanohibiki: this technology nonsense puts me off like I can't even tell, characters like Hiro Okamura should use their intelligence more fruitfully in my opinion

@archizoom:

Cleaning alien radioactive mineral (harmful to people in the long run) from the atmosphere – that counts as productive use of Hiro’s intellect IMO (plus he got reward for his good deed).

@sanohibiki: well of course but I mean in the long run they misuse their intelligence being that even with so many of these exceptional individuals in the world, all of the planet's pressing problems remain unresolved. This child can single handedly build a self replicating nano machine yet people still die from aids. Hiro is a deus ex machina in the form of a human being pretty much. Writers use these technological miracles so wildly that sometimes I think I need to go get a PhD in computer science to make some sense out of some of these comic books.

Kryptonite can be synthesized. Anyone can literally make as much kryptonite as they want to. I'm surprised more people don't have it.