> I am still uncertain how the 
> new 'soup bowls warp into 
> hex cells' theory works.

Not really new, at all, dates back to at least the 1970s, as I mentioned in
the recent "PF100s Three Years Later" thread, but what I think is the most
relevant information was found by Weaire and Phelan:

Here's an article about Weaire and Phelan and their work: 
http://www.sciencenews.org/sn_arc99/7_24_99/bob2.htm
  (plain English discussion).

Weaire, D.; Phelan, R.
Nature, Volume 367, Issue 6459, pp. 123 (1994).
DOI: 10.1038/367123a0
http://www.nature.com/nature/journal/v367/n6459/pdf/367123a0.pdf
(full "correspondence" from the journal "Nature", a trip to the library is
required, as it is paywalled)

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