A baby hippopotamus lies next to its mother on the first day it was presented to the public at the Zoo Berlin zoo on November 1, 2011 in Berlin, Germany. The baby hippo was born at the zoo on October 23. (Photo by Sean Gallup/Getty Images)

Festive characters perform during Harrods 26th Annual Christmas Parade on November 5, in London, England. (Photo by Steve Finn/Harrods via Getty Images)

German field telegraph operators at work in Warsaw. (Photo by Hulton Archive/Getty Images). 1st October 1914

The BMW i8 concept vehicle is displayed at a sneak preview of the car along with the BMW i3 on November 9, 2011 in New York City. (Photo by Spencer Platt/Getty Images)

Russian soldiers write home while serving on the Eastern Front during World War I, circa 1915. (Photo by Hulton Archive/Getty Images)

The Oshkosh M-ATV – MRAP (Mine Resistant Ambush Protected) vehicle developed by the Oshkosh Corporation of Oshkosh, Wisconsin. It is designed to provide the same levels of protection as the larger and heavier previous MRAPs but with improved mobility and it is intended to replace M1114 HMMWVs. (wikipedia) (Photo by Alex Wong/Getty Images)

American film star Marilyn Monroe (Norma Jean Mortenson or Norma Jean Baker). (Photo by Keystone Features/Getty Images). 1952