Two robotic legged squad support system (LS3) machines by the Defense Advanced Research Project Agency follow a technician during a demonstration at Joint Base Myer-Henderson Hall, Virginia, on September 10, 2012. (U.S. Marine Corps photo by Sgt. Mallory S. VanderSchans via The Atlantic)

A young female polar bear came to the vessel, which was stopped and shut down in fast ice on the island of Spitsbergen in the Svalbard Archipelago, Norway. She was playing right in front of cameras entertaining people.

Belen Rodriguez and Elisabetta Canalis attends the 61th Sanremo Song Festival at the Ariston Theatre on February 15, 2011 in San Remo, Italy.

Tim Macpherson is a UK based advertising photographer who started his career shooting Editorial for magazines. His works are published in best advertising photographers book Lurzers. He works for The sunday times, Nikon, phillips etc. Photoset is short, but very creative.

John and Edward Grimes of the band Jedward from Ireland peform at a dress rehearsal the day before the second semi-finals of the Eurovision Song Contest 2011 on May 11, 2011 in Duesseldorf, Germany. (Photo by Sean Gallup/Getty Images)

A fun notebook that I too wish I had when I was a kid. Play more more more, a finalist design at the European Design awards by Netherlands-based design studio Trapped in Suburbia, is an unique notepad aimed at encouraging “play” at work.

Humanoid robot bartender “Carl” interacts with guests at the Robots Bar and Lounge in the eastern German town of Ilmenau, July 26, 2013. “Carl”, developed and built by mechatronics engineer Ben Schaefer who runs a company for humanoid robots, prepares spirits for the mixing of cocktails and is able to interact with customers in small conversations. (Photo by Fabrizio Bensch/Reuters)

Participants demonstrate for the media before the role play event at Czocha Castle in Sucha, west southern Poland April 9, 2015. Harry Potter enthusiasts from all over the world are attending a four-day live action role play event at the medieval castle made into a close imitation of the “College of Wizardry”. (Photo by Kacper Pempel/Reuters)