German-American model and television personality Heidi Klum is seen on February 19, 2019 in Los Angeles, California. (Photo by BG002/Bauer-Griffin/GC Images)

The Aurora Borealis (Northern Lights) is seen over the sky near Inari in Lapland, Finland on February 14, 2019. (Photo by Alexander Kuznetsov/Reuters)

A US Marine leads two Viet Cong suspects in restraints during the Tet Offensive on February 20, 1967. (Photo by Bettmann Archive/Getty Images)

Belarusian ornithologist Vladimir Ivanovski, 72, stands on a tree as he builds an artificial nest for birds of prey from tree branches, in a marsh near the village of Kazyany, Belarus on October 20, 2019. (Photo by Vasily Fedosenko/Reuters)

People ride a boat on the Tianquan Lake during a foggy day in Xuyi in China's eastern Jiangsu province on November 20, 2019. (Photo by AFP Photo/China Stringer Network)

A villager harvests water chestnuts in Feijiadai Village, Zhejiang Province, China on September 20, 2019. (Photo by Huang Zongzhi/Xinhua News Agency/Barcroft Media)

English journalist and newsreader Lucy Watson attends the “Charlie's Angels” UK Premiere at The Curzon Mayfair on November 20, 2019 in London, England. (Photo by Jeff Spicer/Getty Images)

Farmers work on a farm near a construction site of new residential buildings in Shanghai, China, February 20, 2016. (Photo by Aly Song/Reuters)