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)

A model rehearses with a fabric face mask on, designed by Zhou Li for her Autumn/Winter 2020 collection show, during China Fashion Week in Beijing, following the novel coronavirus disease (COVID-19) outbreak, China on May 3, 2020. (Photo by Tingshu Wang/Reuters)

The secretive indri (Indri indri) of Madagascar, the largest living lemur. It is also critically endangered and highly evolutionarily distinct with no close relatives, which makes its branch one of most precarious on the mammal evolutionary tree. In the likely event that the indri goes extinct, we will lose 19m years of unique evolutionary history from the mammal tree of life. (Photo by Pierre-Yves Babelon/Aarhus University)

In this January 16, 2019, file photo, a homeless man sleeps on a median strip in New Delhi, India. In India, some 270 million people – nearly 22 percent of the country's population – live in poverty, making giveaways particularly attractive to voters. The Modi government in its interim budget in January announced farmers would be paid 6,000 rupees ($85) annually, benefiting as many as 120 million households and income tax relief to the middle class. (Photo by Altaf Qadri/AP Photo/File)

(L-R) Pieter Van Lankveld, Jay Schippers, Ynze Oegema, Justin Kimmann, Teun Kivit and Twan Van Gendt compete during the Dutch National BMX Championships at Olympic Training Centre Papendal on October 11, 2020 in Arnhem, Netherlands. (Photo by Dean Mouhtaropoulos/Getty Images)

In this November 18, 2015 photo, 9-year-old Mahiro Takano, center, three-time Japan karate champion in her age group practices in Nagaoka, Niigata Prefecture, north of Tokyo. Mahiro stars in singer Sia's latest music video "Alive", the just-released single from the singer's upcoming album. (Photo by Eugene Hoshiko/AP Photo)

A customer buys a box of bullits and a target of Osama Bin Laden October 3, 2001 at Blue Ridge Arsenal in Chantilly, VA. Guns sales have risen across America since the September 11th terrorist attacks. (Photo by Mark Wilson/Getty Images)

A woman pushes a cart during a protest against racial inequality and call for defunding of Seattle police, in Seattle downtown, Washington, U.S. June 14, 2020. (Photo by Goran Tomasevic/Reuters)