Palestinians wield sling-shots at Israeli troops during clashes outside Israeli military prison, Ofer, near the West Bank city of Ramallah, Oct. 21, 2011. (Majdi Mohammed/AP Photo)

A dog jumps through a ring of fire during a National Cadet Corps (NCC) passing out ceremony in the Sri Lankan central town of Kandy, Oct. 21, 2011. (Ishara S. Kodikara/AFP/Getty Images)

Residents wade through floods in the Rangsit District on the outskirts of Bangkok, Thailand, Oct. 21, 2011. Thai Prime Minister Yingluck Shinawatra urged residents to move their belongings to higher ground as the country’s worst floods in half a century began seeping into the capital’s outer districts. (Aaron Favila/AP Photo)

Women place earthen lamps on a Rangoli, a hand decorated pattern on the floor, ahead of the upcoming festival of Diwali in Ahmadabad, India, Oct. 21, 2011. On Diwali, also known as the Festival of Lights, Hindus light lamps to signify the victory of good over evil. (Ajit Solanki/AP Photo)

Queen Elizabeth II, second left, laughs with 6 ft 8 in tall Australian basketball star Liz Cambage, and Prime Minister Julia Gillard, right, at a reception at Parliament House in Canberra, Oct. 21, 2011. The Queen is on her first visit to Australia since 2006. (Rick Rycroft/AP Photo)

Mike McCabe, 19, a student at Ithaca College gestures while holding a sign at the Occupy Wall Street encampment in Zuccotti Park, Oct. 21, 2011 in New York. (Mary Altaffer/AP Photo)

Amanda Boxtel, left, who is paralyzed, is helped to walk with the aid of the new “Bionic Exoskeleton” during its launch at the Excel Centre, Oct. 21, 2011 in London, England. The device developed by Ekso Bionics is a wearable, battery-powered, robotic exoskeleton, designed to aid wheelchair users and those who have suffered from spinal chord injuries to stand and walk. (Dan Kitwood/Getty Images)