Lindsay Heimbach goes airborne while sledding down a hill on Mt. Lemmon December 27, 2008. (Photo by James Gregg/Arizona Daily Star)

A garbage collector, with his horse and cart, prepares to unload rubbish at the municipal dump in Nezahualcoyotl, on the outskirts of Mexico City, February 18, 2015. Hundreds of horse or donkey-drawn carts will disappear from the streets of a municipality in the state of Mexico, located on the outskirts of Mexico City, and will be replaced by motorized vehicles, local authorities said. (Photo by Henry Romero/Reuters)

An artiste leads a bear as a child sits on it during the first day of a fair organized by GUM departmental store for the upcoming Christmas and New Year celebrations at Moscow's Red Square, November 29, 2014. (Photo by Maxim Zmeyev/Reuters)

Eduardo Alan of Argentina and Pampa Racing gets his Yamaha motorbike stuck in the sand during stage five of the 2012 Dakar Rally from Chilechito to Fiambala on January 5, 2012 in Fiambala, Argentina. (Photo by Bryn Lennon/Getty Images)

A woman sits next to a Gollum figure on the “Middle-earth Shuttle” subway train November 18, 2003 in New York City. The train's cars were decorated with Middle-earth creatures, vines, moss and stones to celebrate the November 18 DVD and VHS release of the Special Extended Edition of The Lord of the Rings: The Two Towers. (Photo by Mario Tama/Getty Images)

A boy plays at a flooded street in front of a passing bus as tropical storm Fung-Wong battered the Philippine capital Manila September 19, 2014. Heavy rain in the Philippine capital, Manila, caused flooding in many areas on Friday, shutting schools, government offices and financial markets as a tropical storm made landfall to the north. Thousands of residents in low-lying areas were moved to higher ground, officials said, as flood waters rose quickly after the equivalent of half a month's usual rain fell in six hours. (Photo by Erik De Castro/Reuters)

Samburu tribesmen stand during the Maralal Camel Derby, Kenya, August 15, 2015. Maralal, a small, arid town about an eight-hour drive north of the Kenyan capital Nairobi, holds an annual camel festival, bringing together members of the Samburu, Turkana and Pokot semi-nomadic cattle-herding tribes. (Photo by Goran Tomasevic/Reuters)

A Palestinian man reacts after his house was flooded by rain water in Khan Younis in the southern Gaza Strip, November 9, 2015. (Photo by Ibraheem Abu Mustafa/Reuters)