A house built on a rock on the river Drina is seen near the western Serbian town of Bajina Basta. The house was built in 1968 by a group of young men who decided that the rock on the river was an ideal place for a tiny shelter, according to the house's co-owner. Marko Djurica/Reuters
Britain's Catherine, Duchess of Cambridge (l.) speaks with Camilla, Duchess of Cornwall and Prince Charles during a garden party at Buckingham Palace in London. Toby Melville/Reuters
A Red-necked Ostrich is seen at Al Bustan Zoological Centre in Maliha village in Sharjah, United Arab Emirates. Ahmed Jadallah/Reuters
Model Amber Le Bon, poses for photographers in London, wearing an outfit that will be worn by the Dress Code Assistants at Royal Ascot in June. Royal Ascot will enforce a strict code of attire in the Royal Enclosure, which is morning dress for men and formal day wear including a hat for ladies. Alastair Grant/AP
Some 25,000 Ultra-Orthodox Jewish people attend the wedding ceremony of Shalom Rokeach, the grandson of the Chief Rabbi of Belz, Yissachar Dov Rokeach, and his bride, Hannah Batya Penet, in Jerusalem. Belz Hasidic dynasty leader Yissachar Dov Rokeach heads one of the largest Hasidic movements in the world, according to local media. Ronen Zvulun/Reuters
Members of the Special Police Unit (SEP) perform in a simulation of a hostage rescue mission as they show off their skills during an event to celebrate the 40th anniversary of the establishment of their unit, in Tacen, Slovenia. Srdjan Zivulovic/Reuters
A worker cleans a signboard of a building at a business district in Beijing. Kim Kyung-Hoon/Reuters
Cast member Souleymane Deme (c.) performs on the red carpet as he arrives with director Mahamat-Saleh Haroun (l.) and cast member Anais Monory for the screening of the film 'Grigris' in competition during the 66th Cannes Film Festival in Cannes, France. Jean-Paul Pelissier/Reuters
Dancers perform on a watery stage suspended above the audience during a dress rehearsal of the Fuerza Bruta (Brute Force) theater group's stage production 'Wayra' in Buenos Aires, May 21, 2013. Marcos Brindicci/Reuters
A woman carries a dog as a fire blazes in the background at El Chorrillo neighborhood in Panama City, May 21, 2013. More than seventy wooden homes were set on fire by unknown causes, leaving more that one hundred people homeless. There were no reports of injuries or deaths so far, according to local media. Carlos Jasso/Reuters
Solar Impulse, piloted by André Borschberg, takes flight during the second leg of the 2013 Across America mission, at dawn from Sky Harbor International Airport in Phoenix. The plane's creators, Bertrand Piccard and Borschberg, said the trip is the first attempt by a solar airplane capable of flying day and night without fuel to fly across America. Matt York/AP
Tourists cross a bridge to an elevator connecting the top of the fortifications of Valletta, with the Grand Harbour below, as fine dust fills the air in Valletta. A dust cloud enveloped Malta, significantly reducing visibility. The dust was blown towards Malta from North Africa, according to local media. Darrin Zammit Lupi/Reuters
As international whaling ramped up around the turn of the 20th century so did efforts by governments, activists, and the public to stop the practice. By 2016, more than half of the species' 14 population segments were no longer considered endangered.
When the Pacific Whale Foundation (PWF) was founded in 1980, its researchers would drive up and down the coast of Hawaii waiting to see a whale. At that time, only a few hundred humpback whales made it to the islands per year. Now, more than 10,000 do.