Manman Luk, a freelance model and make up artist, poses inside her 100-square-foot (9-square-metre) sub-divided unit, paying a monthly rent of HK4,700 ($606) in Hong Kong, China January 6, 2017. (Photo by Bobby Yip/Reuters)

The fourth annual BigPicture Natural World Photography Competition aims to celebrate the diversity of life on Earth, and encourages people to protect and conserve it. Here: “The Salmon Catchers”. Terrestrial Wildlife. To capture this view of a mother grizzly bear and her cub, photographer Peter Mather set up a camera trap on a log that he knew the bears tended to traverse while fishing for salmon, in the Yukon River watershed in Canada. (Photo by Peter Mather/BigPicture Natural World Photography Competition 2017)

Heimana Reynolds of USA in action during a training session prior to the World Skate Park World Championships at the Parque Candido Portin​ari in Sao Paulo, Brazil, 11 September 2019. (Photo by Sebastião Moreira/EPA/EFE)

English radio and television presenter Caroline Flack, 40, seen arriving at Bagatelle restaurant in Mayfair on November 08, 2019 in London, England. (Photo by GORC/GC Images)

German President Frank-Walter Steinmeier struggles with his glasses and face mask as he attends a press conference after visiting the Salzburg Festival in Salzburg, Austria, Saturday, August 22, 2020. (Photo by Kerstin Joensson/AP Photo)

A worker wearing a protective mask uses a blower to remove leafs from a walkway during sunny autumn weather near Stallikon, Switzerland on October 27, 2020. (Photo by Arnd Wiegmann/Reuters)

Stranded cars remain in a flooded street during an intense rainstorm in Havana, on April 29, 2015. Two people were killed, three buildings collapsed and another 24 suffered some kind of damage due to the heavy rain that affected several sectors of Havana Wednesday. (Photo by Yamil Lage/AFP Photo)

(L-R) Canadian actor Patrick J. Adams as Michael Ross and American member of the British royal family and a former actress Meghan Markle as Rachel Zane at “Breakfast, Lunch and Dinner”, Episode 402 in April 2014. (Photo by Ian Watson/USA Network/NBCU Photo Bank/NBCUniversal via Getty Images)