| [http://firefoxcropcircle.com/circle/ Students make a crop circle of the Firefox logo in an oat field in Oregon]
| [[File:2006 crop circle.jpg|thumb|Aerial view of Firefox crop circle]]
|[https://blog.mozilla.org/community/2013/06/24/milestone-firefox-crop-circle-created-in-an-oat-field/ Blog post]
|-
| February 13, 2007