In this photograph taken on February 18, 2016, Pakistani children ride on swings in the predominantly Pashtun Korangi District of Karachi. In a rundown district of Karachi, Rabia balks at a neighbour's proposal to vaccinate her children, demonstrating one of the biggest hurdles to eradicating polio in Pakistan by the end of the year: confused and frightened parents. (Photo by Asif Hassan/AFP Photo)

A woman takes a selfie picture as Turkish Kurds gather as part of Newroz celebrations in Diyarbakir, on March 21, 2016. Nowruz, the Farsi-language word for “New Year”, is an ancient Persian festival, celebrated on the first day of spring, on March 21, in Central Asian republics, Iraq, Turkey, Afghanistan and Iran. (Photo by Ilyas Akengin/AFP Photo)

“Titanoboa is a genus of snake that lived approximately 58–60 million years ago, during the Paleocene epoch, a 10-million-year period immediately following the dinosaur extinction event. The only known species is the Titanoboa cerrejonensis, the largest snake ever discovered, which supplanted the previous record holder, Gigantophis”. – Wikipedia

Photo: Leah Del Rio views a replica of the prehistoric Titanoboa, the largest snake to ever live, on display at Grand Central Terminal on March 23, 2012 in New York City. (Photo by Michael Loccisano/Getty Images)

Participants dressed as Santa Claus gather shortly before the 4th annual Michendorf Santa Run (Michendorfer Nikolauslauf) on December 9, 2012 in Michendorf, Germany. Over 800 people took part in this year's races that included children's and adults' races. (Photo by Sean Gallup)

Mah Chan, a Long Neck Padaung hill tribe woman weaves a scraf for sale to tourists in a small village where 30 familes live July 13, 2006 in Chiang Dao, Thailand. All the Long Neck villages are set up for tourists and just over a year ago the hill tribe members were hand picked to move closer to Chiang Mai from more remote communities so that they could be more accessible. The Padaung women famously wear brass rings around their necks, beginning at five-years-old, to distort the growth of their collarbones and making them look like they have long necks. They are originally from eastern Burma near the Thailand border. (Photo by Paula Bronstein/Getty Images)

Technicians check a CRH high-speed train at Shanghai Hongqiao High-speed train base on December 28, 2011 in Shanghai, China. China's railway stations have started today to sell tickets for the 2012 Spring Festival travel season scheduled to run between January 8th and February 16th, centred around the Chinese New Year which this year falls on January 23rd. (Photo by ChinaFotoPress/Getty Images)

Hugo Belleri (L), a three-year-old boy and the youngest Gilles of Binche, takes part in the parade of Young Gilles of Binche during the carnival event in Binche February 17, 2015. The Binche carnival, a UNESCO World Heritage event, is the biggest and the liveliest annual event in Belgium. Up to 1,000 Gilles parade in the city centre of Binche, wearing a red, yellow and black medieval costume hung with bells and decorated with fluffy lace at the neck, wrists and ankles. (Photo by Yves Herman/Reuters)