LOST Tonight: (2/2 - "LA X")

[Teuthida]

They did manage to answer some of these in the last ep. The song didn't cover the ones I'm most curious about:

What's the deal with Walt's magical powers. Seriously, I need to know this.
The deal with Aaron Turniphead.
Why babies can't be born on the island (though I imagine this will be answered given the goddess statue.) Is on the list towards the end.
How come Daniel Faraday's last name wasn't either that of his mother or father...and why he has an American accent when neither parent is American and grew up in England.