An Indian labourer carries a sack of plastic bottles on his head near one of the largest disposal sites in north-east India, ahead of the “World Environment Day” in Boragaon area of Guwahati on June 4, 2018. World Environment Day is marked annually on June 5, and aims at promoting awareness and action to protect the environment. (Photo by Biju Boro/AFP Photo)

Robot inventor Wu Yulu sits on a rickshaw driven by a robot which he invented in his village in rural Beijing's Tongzhou district, China, 17 November 2016. The 54-year-old Chinese farmer living in rural Beijing's Tongzhou district invented 63 robots in the past 30 years. Wu, who only received primary school education, plans to give up the agricultural work for his robot products. He regularly participates in exhibitions, transfers patent rights and teaches at the university to earn money. (Photo by Wu Hong/EPA)

Men fix a pinata representing U.S. President-elect Donald Trump as a devil outside a house before it is set on fire at the traditional Burning of the Devil festival, ahead of Christmas in Guatemala City, Guatemala, December 7, 2016. (Photo by Luis Echeverria/Reuters)

A group of fashionable nonagenarians pose for a photo in Pengzhou, Sichuan, China on October 12, 2016. (Photo by Rex Features/Shutterstock)

A stroller walks his dogs in an autumnally colored forest in Cuxhaven, nothern Germany on November 7, 2018. (Photo by Patrik Stollarz/AFP Photo)

A student gets off a police vehicle which carried her to a high school to arrive in time for a college entrance exam in Seoul, South Korea, Thursday, November 18, 2021. About 510,000 high school seniors and graduates across the country are expected to take the College Scholastic Ability Test. (Photo by Ahn Young-joon/AP Photo)

A butterfly is seen at a farm in Beykoz disrtict of Istanbul, Turkey on October 26, 2021. Cigdem Unlu runs a farm where 800 butterflies live and being presented to the visitors as the environment exclusively weathered for butterflies. (Photo by Elif Ozturk Ozgoncu/Anadolu Agency via Getty Images)

Kite-surfers practice in a water reservoir at the shores of the Mediterranean sea close to the southern Israeli kibbutz of Ziqim during stormy weather, on December 20, 2021. (Photo by Menahem Kahana/AFP Photo)