Boys walk home for lunch from school in the village of Kogelo, west of Kenya's capital Nairobi, July 16, 2015. U.S. President Barack Obama visits Kenya and Ethiopia later this month. His ancestral home of Kogelo is home to Sarah Hussein Obama, his step-grandmother. The Kenyan village, burial place of Obama's father, features an open-pit goldmine, a pork butcher's, a school named after their most famous son and outdoor market stalls. Villagers get around by motorbike taxi or on foot while a donkey-cart transports water. Children, some of them named Obama in honour of the President, walk to and from school together. (Photo by Thomas Mukoya/Reuters)

Antonina, 9, looks through a shrapnel-broken window after an online lesson on the first school day at her home in the village of Pokrovske, on September 1, 2022, amid Russian invasion of Ukraine. In Pokrovske, a tiny village of 24 people in the Mykolayev region of southern Ukraine, nine-year-old Antonina Sidorenko started school to the steady sound of cannons in this town near the front line. (Photo by Dimitar Dilkoff/AFP Photo)

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)

People cool off at Crown Fountain in Millennium Park as temperatures reached a record high of 97 degrees Fahrenheit on June 17, 2024 in Chicago, Illinois. Temperatures in the city are expected to reach highs in the 90s for the remainder of the week. (Photo by Scott Olson/Getty Images)

A boy dressed like Hindu Lord Krishna waits to attend celebrations on the eve of Janmashtami at a school in Mumbai, India, Friday, September 4, 2015. The day marks the birth of Krishna. (Photo by Rajanish Kakade/AP Photo)

A coach wipes away tears and comforts a girl who was feeling tired during gymnastics lessons at the Shanghai Yangpu Youth Amateur Athletic School in Shanghai, China, May 4, 2016. (Photo by Aly Song/Reuters)

School girls stand next to a ballot box at a polling station during the municipal elections in Havana April 19, 2015. Cuba held its first local elections since a historic thaw in relations with the United States with an unusual wrinkle in the single-party system: two of the 27,000 candidates openly oppose the government. (Photo by Reuters/Stringer)

School boys who attend Sri Lankan traditional dance training wait for their graduation ceremony at a Buddhist temple in Colombo, Sri Lanka January 23, 2017. (Photo by Dinuka Liyanawatte/Reuters)