A baby sloth uses his mother as a hammock while she feasts on papayas in Heredia province in Costa Rica in April 2023. (Photo by William Steele/Solent News)

US Army Parachute Team Golden Knights perform a precision drop to commemorate the 50th anniversary of the end of the Vietnam War, above West Potomac Park in Washington, DC, USA, 11 May 2023. The performance is one of many activites being held on the National Mall over three days to honor Vietnam War veterans and their families and to commemorate the 50th anniversary of when the last US combat troops left South Vietnam in 1973. (Photo by Michael Reynolds/EPA/EFE)

A Kashmiri Muslim bride looks through her veil during a mass wedding event in Srinagar, Indian controlled Kashmir, Thursday, June 15, 2023. Mass weddings in India are organized by social organizations primarily to help the economically backward families who cannot afford the high ceremony costs as well as the customary dowry and expensive gifts that are still prevalent in many communities. (Photo by Mukhtar Khan/AP Photo)

People take pictures near a Soviet flag flying on an embankment in Saint Petersburg, Russia on June 17, 2023. The flags of Russia, the USSR, and the Russian Empire were installed on the shore to mark the anniversaries of each flag's adoption. (Photo by Anton Vaganov/Reuters)

Markisa “Kis” Blount, left, helps leads a dance based exercise class in Franklin Square as part of the FITDC’s Juneteenth Health and Wellness Fair on Monday June 19, 2023 in Washington, DC. (Photo by Matt McClain/The Washington Post)

Karolina Kluskova of the Czech Republic formed one part of an artistic swimming duet at the European Games at Aquatics Centre in Oswiecim, Poland on June 22, 2023. (Photo by Sarah Meyssonnier/Reuters)

Maya Goldstein, 7 marches in the Capital Pride Parade in Washington, D.C. on June 10, 2023. (Photo by Amanda Andrade-Rhoades for The Washington Post)

Grand prize winner: environmental photographer of the year 2023; also 1st place in the humanity v nature category; and winner of the 2023 public award. Lopé national park, Gabon, 2021. An angry elephant tries to defend itself after it was hit by a train that crosses paths the animals use within Lopé national park. Park officials decided the elephant was too severely injured to be saved. After it was killed, the park director distributed the meat to local people. As the forest loses its carrying capacity to sustain its megafauna, this kind of human-wildlife conflict is increasing. (Photo by Jasper Doest/Environmental Photography Award)