Mei Xiang, the female giant panda at the Smithsonian Institution's National Zoo in Washington, eats breakfast in December 2001. (AP Photo/Susan Walsh)
The Rothschild Collection of patent models is on display at the Smithsonian American Art Museum through November 2013.
The Rothschild Collection of patent models is on display at the Smithsonian American Art Museum through November 2013.
The Rothschild Collection of patent models is on display at the Smithsonian American Art Museum through November 2013.
Mei Xiang, the female giant panda at the Smithsonian Institution's National Zoo in Washington, eats breakfast in December 2001. (AP Photo/Susan Walsh)
Mei Xiang, the female giant panda at the Smithsonian Institution's National Zoo in Washington, eats breakfast in December 2001. Mei Xiang has given birth to a cub following five consecutive pseudopregnancies in as many years. (AP Photo/Susan Walsh)
Mei Xiang, the female giant panda at the Smithsonian Institution's National Zoo in Washington, eats breakfast in December 2001. (AP Photo/Susan Walsh)
Matt Warfield of Hanover, Pa., and his son Brandon, 8, watch a live NASA press conference streamed live on the landing of Curiosity, which landed on the surface of Mars early Monday morning along with other visitors to the Smithsonian’s National Air and Space Museum, Washington, D.C., Monday, August 6, 2012. (Andrew Harnik/The Washington Times)
Brothers Riccardo (left), 16, and Ruggero Amaduzzi, 19, wait their turn to control a large panoramic interactive digital map of the surface of Mars at the Smithsonian National Air and Space Museum in Washington, D.C., on Monday during a NASA press conference streamed live on the landing of Curiosity. (Andrew Harnik/The Washington Times)
