Over the years, I've written a number of articles for various origami publications. In this section I'll reprint and/or provide links to some of my favorites. You'll also find a few of the more useful ones in the Information section.
Starting in November, 2010, I began writing a regular column on crease patterns (with occasional forays into other topics) for OrigamiUSA's then-new online publication. You'll need to be a member of OrigamiUSA to read the articles, but in my highly biased opinion, it's well worth the cost (not just for my articles, but those by many other well-known origami folks).
I've written a few articles for mathematics/art venues. You can download versions of them here.
The Google Doodle for March 14, 2012, honored Akira Yoshizawa, the father of modern origami. I helped put the Doodle together; this article tells the story. (I also wrote a bit for Google's own blog, and another piece for my own blog.)
From 1986–1990 I wrote a regular bimonthly column for British Origami, the magazine of the British Origami Society. Its then-editor, Paul Jackson, gave me fairly free rein to write about whatever I wanted (which, in retrospect, might not have been the wisest editorial choice). The outcome was not entirely dignified.
And these are articles that just didn't seem to fit anywhere else, but still had some bearing on the world of origami.