wandered into the University of Colorado Boulder, Colo., dorm complex Williams Village falling from a tree after being ... more

TOPSHOTS Russian self-propelled guns rolls on the Red Square in Moscow late on April 26, 2012, during a night rehearsal of the Victory Day Parade.The parade will take place on May 9 to commemorate the 1945 defeat of Nazi Germany. AFP PHOTO / ANDREY SMIRNOVANDREY SMIRNOV/AFP/GettyImages less

TOPSHOTS Russian self-propelled guns rolls on the Red Square in Moscow late on April 26, 2012, during a night rehearsal of the Victory Day Parade.The parade will take place on May 9 to commemorate the 1945 ... more

TOPSHOTS
South Korean staff wear t-shirts showing the face of Lady Gaga at an information desk ahead of a concert outside Seoul's Olympic Stadium on April 27,2012. Tens of thousands of South Koreans flocked to the opening show of Lady Gaga's global tour on April 27, amid colourful scenes as female and male fans donned outrageous outfits in honour of the US pop diva. AFP PHOTO / JUNG YEON-JEJUNG YEON-JE/AFP/GettyImages less

TOPSHOTS
South Korean staff wear t-shirts showing the face of Lady Gaga at an information desk ahead of a concert outside Seoul's Olympic Stadium on April 27, 2012. Tens of thousands of South Koreans flocked to ... more

A one day-old American bison cub and its mother enjoy a sunny day in their compound at the zoo de Servion, in Servion, Switzerland, Friday, April 27, 2012. (AP Photo/Keystone, Laurent Gillieron)

A one day-old American bison cub and its mother enjoy a sunny day in their compound at