Young U.S. visitors pose for a photograph next to a vintage car in Havana March 16, 2016. (Photo by Ueslei Marcelino/Reuters)

Camels kick up clouds of sand as they race down a steep dune. The camels can reach speeds of up to 40 kilometres per hour as they descend the ten-metre tall dunes on April 20, 2022. The photos were taken by photographer Qian Guo in Naiman Banner, near the city of Tongliao in the Inner Mongolia region of northeastern China. The 58 year old said: “These are local Mongolian farmers, and two of them are a father and a son. They have more than ten camels which they farm and train”. (Photo by Qian Guo/Solent News & Photo Agency)

Young gymnasts practice pull-up on a bar at a gymnasium of a sports school in Jiaxing, Zhejiang province April 11, 2015. (Photo by William Hong/Reuters)

A young boy lifts heavy bricks as he works at brick factory around Kathmandu valley. (Photo by Narendra Shrestha/EPA)

A young Free Syrian Army fighter holds a rifle in Haresta neighbourhood of Damascus January 16, 2013. (Photo by Goran Tomasevic/Reuters)

Attendees at Wizard World Comic Con walk through hallways in Chicago, Illinois, United States, August 22, 2015. (Photo by Jim Young/Reuters)

A young Shiite Muslim child participates in a Muharram procession in Ahmadabad, India, Sunday, October 9, 2016. (Photo by Ajit Solanki/AP Photo)

Two young women embrace in bed together, both wearing white lace underwear. (Photo by Popperfoto/Getty Images)