A Nepalese devotee prepares for a religious mask performance during the Seekaali Festival in Khokna village, near Kathmandu, Nepal, 07 October 2016. During the 300-year-old Seekali festival, elderly ethnic Newari devotees wear masks of 14 various goddesses including Lord Ganesha, Lord Shiva, Lord Laxmi, Lord Brahma and Lord Bishnu. The Khokna people celebrate the Seekaali festival as an alternative of the Dashain festival which is biggest festival of Nepalese Hindus that celebrates the victory of the gods over demons. (Photo by Narendra Shrestha/EPA)

High angle view of a young woman reading in a bathtub, turning page, enjoying time with herself. Candles and red wine. Valentines day concept, International womans day. (Photo by Vuk Saric/Getty Images)

White House Press Secretary James Brady and District of Columbia police officer Thomas Delahanty lie wounded on the ground after John Hinckley Jr. fired six shots at President Reagan outside the Washington Hilton Hotel in Washington, DC, on March 30, 1981. (Photo by Courtesy Reagan Library via Reuters)

In his series of untitled photographs Nobody Claps Anymore, the Mexican-American photographer Alec Dawson portrays ordinary people in their homes in a downbeat, ultra-stylised manner. Staring into space as they watch TV or water the garden, the real-life subjects of photographer hint at vast reserves of boredom and regret. (Photo by Alec Dawson)

People wait in line to pay their last respects to the late Fidel Castro in Havana, Cuba, Monday, November 28, 2016. Cuba's government has declared nine days of national mourning following Castro's death on Nov. 25. (Photo by Fernando Medina/AP Photo)

“Red Arrows” at the 2016 royal air tattoo, RAF Fairford, UK. By Jonny Williams, finalist: action. (Photo by Jonny Williams/UK National Geographic Traveller Photography Competition 2018)

For more than three years, Ukraine has been plagued by a conflict between the eastern secessionist territories and the Kiev government. Demonstrations by pro-Russian parties that oppose the current government first began in 2014 - and now, over 10,000 people have died, many of them civilians. These images portray a generation caught between war and peace. Many of them were born into the civil conflict dominating the country and are disorientated about their place in the world. Here: Youths during a party organised on a decommissioned bridge in Kiev. (Photo by Aude Osnowycz/The Guardian)

Coast and marine winner: Storm Gull (Lesser black-backed gull), New Haven, East Sussex. (Photo by Craig Denford/British Wildlife Photography Awards)