Russian President Vladimir Putin, right, and North Korea's leader Kim Jong Un pose for photographers during their meeting in Vladivostok, Russia, Thursday, April 25, 2019. Putin and Kim are set to have one-on-one meeting at the Far Eastern State University on the Russky Island across a bridge from Vladivostok. The meeting will be followed by broader talks involving officials from both sides. (Photo by Alexander Zemlianichenko/AP Photo/Pool)

Opposition students march against Venezuelan President Nicolas Maduro's government in Caracas February 12, 2015. Venezuelan troops blocked students during marches against Maduro on Thursday as pro-government supporters also rallied on the anniversary of 2014 protests that led to 43 deaths. In Caracas, troops cordoned off scores of students on an unauthorized march to a church where they planned a mass in honour of demonstrators who died. (Photo by Jorge Silva/Reuters)

Women loyal to the Houthi movement parade to show support to the movement in Sanaa, Yemen January 17, 2017. (Photo by Khaled Abdullah/Reuters)

An artist takes part in the festival “Statues en Marche” in Marche-en-Famenne, Belgium, July 20, 2019. Living statues are a common sight in many city centers, but it is rare to see such a diverse range of this peculiar form of street art for which performers must keep still for painfully long periods of time to create the desired illusion. (Photo by Yves Herman/Reuters)

A man looks at members of the flash mob group calling themselves the «Brides of March» (“Grab a wedding dress and join the brides as we parade through the heart of San Francisco, strolling through Union Square, shopping at fancy stores and drinking at local bars!”) as they stand outside a bar March 18, 2006 in San Francisco. The flash mob group made their way through the streets stopping at bars, cafes, and several stores. (Photo by Justin Sullivan/Getty Images)

People protest for greater action against climate change during the People's Climate March on September 21, 2014 in New York City. The march, which calls for drastic political and economic changes to slow global warming, has been organized by a coalition of unions, activists, politicians and scientists. (Photo by Andrew Burton/Getty Images)

Artists called “Le couple en chocolat” take part in the festival “Statues en Marche” in Marche-en-Famenne, Belgium, July 22, 2018. Living statues are a common sight in many city centres, but it is rare to see such a diverse range of this peculiar form of street art for which performers must keep still for painfully long periods of time to create the desired illusion. (Photo by Yves Herman/Reuters)

Nose to Nose; Human/Nature winner. “Doug Gimesy was documenting work at the Joey and Bat Sanctuary near Melbourne when he met a wombat (Vombatus ursinus) whose mother had been killed by a car. Gimesy watched as a young veterinary student bottle-fed the orphaned joey, then touched her nose to the joey’s in a tender moment of interspecies bonding”. (Photo by Doug Gimesy/BigPicture)