A solar-powered plane takes off from Jiangbei International Airport in southwest China's Chongqing Municipality, Tuesday, April 21, 2015. The Solar Impulse 2 departed Chongqing on Tuesday for a 1190-kilometer (642-mile) flight to the city of Nanjing in eastern China, the sixth leg of its around-the-world flight. (Photo by Chinatopix via AP Photo)

A citizen rides in smog on December 20, 2016 in Jinan, Shandong Province of China. Air quality index (AQI) readings exceeded 400 and some schools have suspended classes in Jinan. (Photo by VCG/VCG via Getty Images)

An orangutan named “Pacquiao” dressed in a Santa Claus costume reacts as he joins an “Animal Christmas Party” at the Malabon zoo in suburban Malabon, north of Manila, Philippines Monday, December 21, 2015. The Malabon Zoo is one of the largest private collections of exotic and endemic animals in the Philippines. (Photo by Aaron Favila/AP Photo)

A man with an American flag on his back and a Biden/Harris campaign flag rides an electronic skateboard through Black Lives Matter Plaza in front of the White House on Election Day, November 3, 2020 in Washington, DC. This year's historic presidential election between President Donald Trump, the incumbent, and Democratic nominee Joe Biden begins to come to a close even though final results are not expected for days to come as states take longer to count historic levels of mail-in ballots. (Photo by Samuel Corum/Getty Images)

People carry lychee for sale on a motorbike on a street in Luc Ngan, Bac Giang province, Vietnam, 22 June 2016. Lychee output in Bac Giang province is expected to reach 130,000 tonnes this year. China is still Vietnam's main lychee export market so far, buying around 60 percent of the annual crop, according to official reports. (Photo by Luong Thai Linh/EPA)

Indian devotees carry their luggage and wade through the flooded water in Varanasi, India, Friday, August 26, 2016. (Photo by Tsering Topgyal/AP Photo)

Life-size sеx dolls are displayed during the 2016 AVN Adult Entertainment Expo at the Hard Rock Hotel & Casino on January 20, 2016 in Las Vegas, United States. (Photo by Gabe Ginsberg/FilmMagic)

A model wears a creation for Stephane Rolland's Spring-Summer 2016 Haute Couture fashion collection presented in Paris, Tuesday, January 26, 2016. (Photo by Francois Mori/AP Photo)