In this photo taken Friday, September 4, 2015, tourists Sarah and John Scott from Worcester, England, take a step back as a male silverback mountain gorilla from the family of mountain gorillas named Amahoro, which means “peace” in the Rwandan language, unexpectedly steps out from the bush to cross their path in the dense forest on the slopes of Mount Bisoke volcano in Volcanoes National Park, northern Rwanda. Deep in Rwanda's steep-sloped forest, increasing numbers of tourists are heading to see the mountain gorillas, a subspecies whose total population is an estimated 900 and who also live in neighboring Uganda and Congo, fueling an industry seen as key to the welfare of the critically endangered species as well as Rwanda's economy. (Photo by Ben Curtis/AP Photo)

“Eye of a toad”. Animal Portraits, Łukasz Bożycki, Poland. Early spring sees a pond near Łukasz’s home city of Warsaw, Poland, full of mating frogs and a few toads. On this March day, Łukasz shared the pond with them for an evening, sitting in the icy water in his chest-high waders, keeping as still as possible, despite the numbing cold, so that the amphibians could get used to him. “I wanted to find a fresh way of portraying the amphibians”, he says, “at water level”. Using a telephoto lens, he focused on one lone toad and waited for the sun to dip almost below the horizon before pressing the shutter, using flash to bring out the details in the shadow. His prize was “the glorious pool of sunset colour” and fiery glow of the toad’s eye. Nikon D80 + 70-300mm f4.5-5.6 lens + extension tube; 1/125 sec at f9 (-2.3 e/v); ISO 100; built-in flash. (Photo by Łukasz Bożycki)

An injured person reacts during a protest against the new government of President Manuel Merino, in San Martin de Lima square, in Lima, Peru, 14 November 2020. Merino took office on 10 November amid a controversial constitutional process after the dismissal of former President Martin Vizcarra for “moral incapacity” by Peruvian Congress. (Photo by Aldair Mejia/EPA/EFE)

People without face masks are seen at Times Square during the coronavirus disease (COVID-19) pandemic in New York City, U.S., March 11, 2021. (Photo by Eduardo Munoz/Reuters)

A man wearing a face mask as a precaution against the coronavirus, walks past in front of an advertisement of an opera performance outside of a theater in Seoul, South Korea, Wednesday, March 3, 2021. (Photo by Lee Jin-man/AP Photo)

Soldier boys at Fort Dix, N.J., learn something about guns during their working hours, as they show their girlfriends at a camp dance, December 13, 1940. In front row, playing with the coin amusement gun, from left: Pvt. Tom D'Amato of West Orange; Rose Sinkewicz, behind gun site, of Trenton; Julia Ivans of Trenton, and Pvt. Vernon Landers of Kearney. Back row: Pvts. William Sargent and William Corlies of Philadelphia. (Photo by AP Photo)

A girl in an angel costume walks with her family past vegetable vendors in Havana, Cuba, Wednesday, April 10, 2019. (Photo by Ramon Espinosa/AP Photo)

An Indian girl student covers her face as a precaution against the coronavirus outbreak, in Mumbai, India, 12 March 2020. According to media reports, more than 70 people in India have tested positive for COVID-19. The World Health Organisation declared the novel coronavirus or COVID-19 as global pandemic. (Photo by Divyakant Solanki/EPA/EFE/Rex Features/Shutterstock)