A boy looks at a six-metre tall luminescent puppet, operated by ten performers, during a preview of Vivid Sydney, promoted as the world's largest festival of light, music and ideas, in Sydney, Australia on May 23, 2018. “Vivid” is a major outdoor cultural event featuring light installations and projections with the annual event this year running from May 25 to June 16, 2018. (Photo by David Gray/Reuters)

A boy poses for a photo as he plays with a homemade toy gun in Qayara, south of Mosul, Iraq, Tuesday, November 22, 2016. For months, residents of the Iraqi town of Qayara have lived in the darkness from a cloud of toxic fumes released by oil fields lit by retreating Islamic State fighters. (Photo by Felipe Dana/AP Photo)

An Afghan boy mourns next to the grave of his little brother who died due to an earthquake, in Zenda Jan district in Herat province, western of Afghanistan, Monday, October 9, 2023. Saturday's deadly earthquake killed and injured thousands when it leveled an untold number of homes in Herat province. (Photo by Ebrahim Noroozi/AP Photo)

A murmuration of starlings above the the small village of Rigg, near Gretna, in the Scottish Borders, on November 25, 2013. The weight of the resting birds on power lines caused some power localised power outages in the village. Still one of the commonest of garden birds, its decline elsewhere puts it on the Red List of endangered species. (Photo by Owen Humphreys/PA Wire)

Bonbibi, Treehouse Point, Fall City, WA. The Bonbibi is balanced on two steel yokes. The yokes spread out the load and allow for tree growth and movement in the wind. A small deck hangs from the beams below and uses the treehouse itself to shelter guests. (Photo by Pete Nelson)

A small section of the expanding remains of the Veil Nebula, a massive star that exploded about 8,000 years ago. The entire nebula is 110 light-years across, covering six full moons on the sky as seen from Earth, and resides about 2,100 light-years away in the constellation Cygnus, the Swan. (Photo by Reuters/NASA/ESA/Hubble)

Students in Aone’s elementary school during break in between the class on April 9, 2015. The school has only six students, two of whom are from the same family. Similarly small schools can be found throughout Japan. (Photo by Ko Sasaki/The Washington Post)