Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent every weekday. Superman ’s only major weakness—aside from bright red capes—is kryptonite.

Superman is able to stop the meteor, but it breaks up and showers the Earth in Kryptonite. Superman Unlimited #1’s cover boasts that this is the beginning of the Emerald Age, and things change ...

As such, Superman 's use of Kryptonite is already looking to be a truly interesting part of its story. I Can't Get Over How The DCU Initially Introduces Kryptonite To Its World ...

When Kryptonite is used on a Kryptonian from a different universe, it often has strange effects. Yet few are stranger than what happens when Earth-3's Superman copy, Ultraman, experiences Kryptonite.

The new Superman trailer gave fans a sneak peek at Metamorpho‘s powers as he was seen creating Kryptonite in it. Metamorpho is one of the characters fans are quite eager to see in the upcoming ...

Unlike kryptonite, jadarite is white rather than a sinister glowing green color - and as it’s found on Earth, it’s presumably harmless against Superman.

Jadarite has been likened to Superman's 'kryptonite' based on their similar chemical compositions. It was discovered in the Jadar Valley of Serbia and officially recognized as a new mineral in 2006.

Gemstone Kryptonite was a version of the meteor rock created by the show’s writers. We’ve yet to see it used in another Superman media outside of Smallville since it appeared in Season 9 ...

The new Superman trailer gave fans a sneak peek at Metamorpho ‘s powers as he was seen creating Kryptonite in it. Metamorpho is one of the characters fans are quite eager to see in the upcoming ...