This picture taken on January 25, 2015 shows a participant taking part in an ice water challenge in Zhangjiajie, central China's Hunan province. Participants were required to stay in an ice pond, holding an ice block while eating ice-cream with an electric fan blowing at them. (Photo by AFP Photo/Stringer)

In this Wednesday, July 23, 2014 file photo, Omaha photographer Lane Hickenbottom photographs the night sky in a pasture near Callaway, Neb. With no moon in the sky, the Milky Way was visible to the naked eye. More than one-third of the world’s population can no longer see the Milky Way because of man-made lights, according to a scientific paper by Light Pollution Science and Technology Institute's Fabio Falchi and his team members, published on Friday, June 10, 2016. (Photo by Travis Heying/The Wichita Eagle via AP Photo)

Construction of the cable road on Broadway in 1891. (Photo by New York Public Library)

Members of the media take pictures of the pre-Inca “Mummy of Cajamarquilla”, which is presumed to be between 800 and 1200 years old, in Lima, Peru December 7, 2021. The “Mummy of Cajamarquilla” found by archaeologists from San Marcos inside a burial chamber of about three meters long and a depth of 1.40 meters in the Cajamarquilla archaeological site, east of Lima. (Photo by Sebastian Castaneda/Reuters)

Protesters wear gas masks in the front of the Romanian Environment Ministry in Bucharest March 4, 2019, to demand better air. Dozens of people holding placards reading “Our children don't breath air anymore” gather in the front of the Environment Ministry to ask for better breathable air in Bucharest. (Photo by Daniel Mihailescu/AFP Photo)

Zimbabwe University students run away from police during a protest outside the magistrates courts in Harare, Monday, September 14, 2020. Police broke up the protest and arrested some students demonstrating in support of a university union leader who was making a court appearance following his arrest for protesting against human rights abuses in the country. (Photo by Tsvangirayi Mukwazhi/AP Photo)

A bandana-clad anti-government demonstrator gestures as she stands by the smoke of burning tires at a make-shift roadblock in Zouk Mosbeh north of Lebanon's capital Beirut, on March 8, 2021 during a protest against the deteriorating value of the local currency and dire economic and social conditions. (Photo by Joseph Eid/AFP Photo)

Visitors look up at mock-ups of dinosaur skeletons inside the Museum of Natural History in Pyongyang on September 28, 2016. (Photo by Ed Jones/AFP Photo)