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I don't think they have a true 13th fold, as definded by the previous record holder:

"For a sheet to be considered folded n times it must be convincingly documented and independently verified that (2n) unique layers are in a straight line. Sections that do not meet these criteria are not counted as a part of the folded section. "
http://pomonahistorical.org/12times.htm

You do realize by that definition, a "fold" just means rotating a section of paper some distance around an axis across the width of the paper? The 13th fold could be one degree.

If we add to the definition that the straight line must be perpendicular to each of the 2n layers, then the fold would have to go 180 degrees.

I don't think they have a true 13th fold, as definded by the previous record holder:

"For a sheet to be considered folded n times it must be convincingly documented and independently verified that (2n) unique layers are in a straight line. Sections that do not meet these criteria are not counted as a part of the folded section. "
http://pomonahistorical.org/12times.htm

I believe 13 times would be the real challenge. 12 is easy.

Apparently, yes. Paper can be, too. Cool.

The whole thing about not being able to fold paper more than 8 times is just nonsense. The folding ability depends entirely on thickness, size, and pliability of the sheet. If you use a 5x3" super heavy and glossy photo paper I doubt you can get more than 5 folds, on the other hand if you use a huge sheet of very thin pliable paper you will easily get 8 folds and beyond. She proved it already, before the mythbusters: http://pomonahistorical.org/12times.htm

All right, clever people of Slashdot, answer me this:

If instead of making a balloon out of this atom-thick material you simply made a large sheet (say, the size of a sheet of A4 paper) could a person fold this super-thin sheet in half more than twelve times? That's the current record, shattering the previously accepted limit of eight folds.*

* Regarding the latter link: I know. (Ouch! My eyes!)

"introducing OrigamiFS, you write it out on paper then fold it in half as many times as you can"

Apparrently it can only be folded 12 times, at most. Unless M$ has created a new form of highly (unstable) foldable OS :D

http://pomonahistorical.org/12times.htm

Britney Gallivan has solved the Paper Folding Problem. This well known challenge was to fold paper in half more than seven or eight times, using paper of any size or shape.

The task was commonalty known to be impossible. Over the years the problem has been discussed by many people, including mathematicians and has been demonstrated to be impossible on TV.