Common squirrel monkeys observe their Christmas present, a box full of mealworms, at the South America enclosure of the Budapest Zoo, in Budapest, Hungary, 24 December 2017. (Photo by Photo by Attila Kovacs/EPA/EFE/Rex Features/Shutterstock)

Teenage girls are all steamed up these days about straight hair. The steam iron is replacing the huge rollers on which countless teens slept every night to achieve the height and curls fashionable until. The same girls endure having their hair stretched to absolute straightness on the ironing board, and then ironed to keep it that way. Unlike the roller setting, this takes teamwork. Gay Stilley, 14, goes through an ironing session with a couple of her friends at the Stilley Home in Glen Oaks, Queens, New York City on December 23, 1964. With a wary eye, Gay tries to watch the straightening process as one friend stretches her hair with a comb and another does the ironing, in the Stilley kitchen. (Photo by Marty Zimmerman/AP Photo)

An unidentified elderly woman, who was knocked over during the melee after a shot was fired in the direction of President Ford, is comforted by a passerby in San Francisco, September 23, 1975. (Photo by AP Photo)

The Clavie, a burning barrel packed with tar soaked sticks fixed on the top of a pole, is surrounded by people at the Doorie Hill on January 11, 2018 in Burghead, Scotland. People welcome in the New Year with the fire ceremony which has ancient roots dating back to the 1750s, when the Julian calendar was reformed in Britain. It is believed to bring good luck for the coming year. (Photo by Jeff J. Mitchell/Getty Images)

A staff member demonstrates how she puts on the helmet of a mock space suit at the C-Space Project Mars simulation base in the Gobi Desert outside Jinchang, Gansu Province, China, April 17, 2019. The facility – comprising several interconnected modules including a greenhouse and a mock decompression chamber – opened its doors to the public. (Photo by Thomas Peter/Reuters)

An Indigenous man stands under a water fountain outside a government building in Brasilia, on April 26, 2019, during the last day of a protest camp. Approximately 4,000 indigenous people from different tribes are taking part in protests during the Indigenous National Mobilization (MNI) week, a mobilization which seeks to tackle territorial rights' negotiations with the government. (Photo by Carl De Souza/AFP Photo)

A couple wearing face masks rides a bicycle at a park in Seoul, South Korea, Saturday, March 7, 2020. The number of infections of the COVID-19 disease spread around the globe. (Photo by Ahn Young-joon/AP Photo)

A woman returns home carrying vegetable on her back (foreground) while other farmer works on vegetable field (background) during the 43rd day of the lockdown imposed by the government as a preventive measure against the spread of COVID-19 coronavirus, in Kathmandu, Nepal on Tuesday, May 5, 2020. (Photo by Rojan Shrestha/NurPhoto via Getty Images)