Just stumbled across the National Geographic Photo contest and wondering if anyone has entered in the past or plans to enter? $10,000 first prize, and most I have talked to are rather proud of photos that they have had published in National Geographic. Looking through their website, and being familiar with some of the posts at CiC, I think CiC participants have a real chance to be published and maybe win.
The entry period begins September 1 and ends November 30, 2011. JPG or JPEG file format. At least 1,600 pixels wide (if a horizontal image) or 1,600 pixels tall (if a vertical image). Total file size must be 5 megabytes (MB) or less.
2011 National Geographic contest main page
FAQ
Image Rules