English: How can a Planarian worm rebuild his body parts?

That's a tough one for evolutionists:

 

A WORM CAN REGROW ITS HEAD AND HAVE ITS MEMORIES RESTORED

Scientists have discovered that not only can the planarian worm regrow its head if its cut off,but the regenerated brain contains the same memories that were stored in the decapitated one. How can this be explained by naturalistic evolution? (1)

 

This is really amazing, isn't it?

First of all regenerating worms is not uncommon, the typical earthworm can create two individuals out of one worm. So removing the head in one worm that is really very powerful in regenerating their body parts looks to me more than normal.

What about the memory? If a human loses his head he will certainly lose his memory. But these worms do save the "memories" in a chemical word. It is as powerful as eating one worm by other planarian worm, and the "predator" worm will get the same "memories".

Is chemical behavior common under invertebrates? Yes, ants and bees are typical "social" and "smart" but chemical behaving beings. In fact the experiements the creationist source talk are "recent", just 58 years old (1955). But what is amazing, is that the falsification of "memory" as being "RNA based" and later becoming chemical was done just 51 years ago.

 

So the question is split in two subquestions:

- some worms can survive after being split, and  the planarian worms being worms, are really good at that, so the head detachment means nothing for them, and they can survive

- as some behaviors are stored in a chemical way and the "brains" are not so "smart" by keeping memories, even giving the pieces of the original "educated" worm to other to be eaten could be enough for "memory transfer"

But even being all "not explainable" what would mean for evolution? How would it falsify it? Would it prove creationism? How?