1. Texans (11-1)They have a two-game lead for the top seed in the AFC playoffs. The key will be remaining sharp down the stretch so they don’t have to turn it back on for their first postseason game. Andy Lyons/Getty Images
The contest is accepting entries in one or all of four categories: wildlife, landscapes, underwater and aerials. The grand-prize winner will receive $10,000, publication in National Geographic Magazine and a feature on National Geographic’s Instagram account.