911 Remembrance, Syrian crisis, NASA astronaut Chris Cassidy returns in Soyuz, Fukushima victim search and more.
Sept. 10, 2013 The Tribute in Light rises above buildings in lower Manhattan during a test. The light display commemorates the victims of the Sept. 11, 2001, terrorist attack on the twin towers of the World Trade Center. READ: 9/11 anniversary being marked with somber tributesMark Lennihan/AP
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.