Yeah, but if you read the article you'd know humans suck at regeneration. It's not impressive that we can regenerate (very, very slowly) the extreme tip of a finger or toe (as long as all the knuckles are left intact), or the kidney *MIGHT* regenerate somewhat, but doesn't happen often enough to be in the literature or commonly suspected. And we can regrow a rib or two over the course of *YEARS* as long as the sac surrounding the rib remains intact.
About the only thing we humans are good at regrowing is liver, and that's only with healthy liver, and doesn't work rupture or puncture that isn't cauterized/sutured. We'll completely regrow a new liver if as much of 3/4ths are removed. Which is actually pretty impressive. But not very cool as a superpower....
The point of the discovery is that there's interesting mechanisms at work allowing these mice to heal in an absolutely complete way, never before documented in mammals. And with further study we might be able to apply their biochemistry to the human healing process. There's a lot of potential, and it looks like an interesting, if not promising, avenue for research.
Quit bitching, cuz I'll bet 10:1 if you lose the tip of your finger, you'll likely not regrow it, and if you do, there will be a lot of scar tissue. If you lose a square inch of skin all at once, there WILL be extensive scarring.
These mice don't scar. How is that not awesome.