During the month of November, National Geographic magazine invited photographers from around the world to submit photos in three categories: People, Places and Nature. We received more than 7,000 entries from over 150 countries, with amateur and professional photographers across the globe participating. We asked Senior Photo Editor Susan Welchman, and National Geographic contributing photographers Stephanie Sinclair and Ed Kashi, to judge this year's photo contest at the Society's headquarters in Washington, D.C., on December 9. Read more about the contest and winners: proof.nationalgeographic.com/2013/12/19/the-2013-national-geographic-photography-contest-winners/ See a gallery of winning photos and honorable mentions: photography.nationalgeographic.com/photography/photo-contest/2013/entries/gallery/