People are captured by FLIR (Forward-Looking Infrared) HD Thermal Imaging Cameras as they walk near the FLIR exhibit at the Las Vegas Convention Center during CES 2019 in Las Vegas on January 10, 2019. (Photo by David McNew/AFP Photo)

Durga Kami, 68, who is studying tenth grade at Shree Kala Bhairab Higher Secondary School, walks with his classmate Sagar Thapa, 14, as they head to school in Syangja, Nepal, June 5, 2016. (Photo by Navesh Chitrakar/Reuters)

People walk on the installation “The Floating Piers” on Lake Iseo by Bulgarian-born artist Christo Vladimirov Yavachev, known as Christo, at the installation's last weekend near Sulzano, northern Italy, July 2, 2016. (Photo by Wolfgang Rattay/Reuters)

A Malaysian Hindu devotee (C) reacts in a state of trance as she walks towards the Batu caves temple during the Thaipusam festival celebrations in Kuala Lumpur on January 24, 2016. More than a million Hindus celebrate the festival of “Thaipusam” at temples across the country. (Photo by Manan Vatsyayana/AFP Photo)

A girl walks to a synagogue of the Tzanz Hasidic dynasty community to read the Book of Esther, which tells the story of the Jewish festival of Purim, in Netanya, Israel, Wednesday, March 23, 2016. The Jewish holiday of Purim commemorates the Jews' salvation from genocide in ancient Persia, as recounted in the Book of Esther. (Photo by Ariel Schalit/AP Photo)

People walk on a sightseeing platform in Zhangjiajie, Hunan Province, China, August 1, 2016. China has opened a 100-metre-long glass skywalk stretching around a cliff on the side of the Tianmen Mountain. The skywalk provides a view of a 300-metre drop and overlooks Tongtian Avenue, a mountain road with 99 turns that snakes up the mountain. When translated in English, it means “Avenue to the Sky”. (Photo by Reuters/Stringer)

Women cover their heads with pans as they walk in a light rain brought by Hurricane Matthew in Port-au-Prince, Haiti, Tuesday, October 4, 2016. Matthew slammed into Haiti's southwestern tip with howling, 145 mph winds Tuesday, tearing off roofs in the poor and largely rural area, uprooting trees and leaving rivers bloated and choked with debris. (Photo by Dieu Nalio Chery/AP Photo)

Belarusian villagers celebrate the Christmas carol rite (Kalyady) in the village of Danilevichy, some 320 km south of Minsk on January 7, 2020. Kalyady is an ancient pagan holiday originally celebrated on winter solstice. Dressed-up people walk from house to house singing, dancing, eating and drinking with their neighbours. (Photo by Sergei Gapon/AFP Photo)