Scientists are working on materials that have Wolverine abilities. This could be ground breaking.

A team of researchers from the University of Pittsburgh has developed a formula for a substance using nanorods to rebuild itself when parts of it have been severed. Like LG's G-Flex phone?

The nanorods are embedded in a polymer gel and when a chunk of it gets chopped off, the nanorods move into place and start a reaction to rebuild what's missing. It is similar to how lizards regrow their tails.

"This is one of the holy grails of materials science," noted Dr. Anna Balazs, the principal investigator on the project. "While others have developed materials that can mend small defects, there is no published research regarding systems that can regenerate bulk sections of a severed material."

[Science Daily]

Now if only they figure out a way to put this into humans: