A crew member carries balloons to a site during preparations for the shooting of an advertisement promoting a Czech beer in the central Prague’s Letna district. Photo by Petr Josek.

An Italian couple sits during lunch as Steve Black of Australia dives past their balcony in the lead up round four of the 2010 Red Bull Cliff Diving world series in Polignano a Mare. Photo by Dean Treml

An aerial view shows Utoeya island, one day before a shooting which took place at a meeting of the youth wing of Norway’s ruling Labour Party. Photo by Lasse Tur.

Internally displaced people are seen in Pibor. The World Food Programme (WFP) started distributing food to 60,000 internally displaced people in South Sudan, according to the United Nations Mission in South Sudan (UNMISS). Photo by Isaac Billy.

Britain’s Catherine, Duchess of Cambridge, carries her son Prince George alongside her husband Prince William as they visit the Sensational Butterflies exhibition at the Natural History Museum in London. Photo by John Stillwell

The H1N1 flu virus (red) is pictured in this handout photograph. The new H1N1 influenza virus bears a disturbing resemblance to the virus strain that caused the 1918 flu pandemic, with a greater ability to infect the lungs than common seasonal flu viruses, researchers reported Monday. Photo by Yoshihiro Kawaoka

Aurora is captured in this photo taken from the International Space Station and posted by European Space Agency astronaut Alexander Gerst to social media. Crewmembers on the space station photograph the Earth from their unique point of view located 200 miles above the surface. Photo by NASA/ESA/Alexander Gerst

Artist Pyotr Pavlensky, a supporter of jailed members of female punk band «Pussy Riot», looks on with his mouth sewed up as he protests outside the Kazan Cathedral in St. Petersburg. A court on Monday rejected a request to call President Vladimir Putin and the head of the Russian Orthodox Church to testify in the trial of three female punk rockers who derided Putin in a protest in the country’s main cathedral, their lawyer said. Photo by Trend Photo Agency.

A visitor takes photographs of Mount Bromo, an active volcano and popular tourist destination, in Probolinggo, East Java province, Indonesia. Photo by Zabur Karuru

People walk on a sightseeing platform in Zhangjiajie, Hunan Province, China. Photo by Stringer

Attendees partake in the inauguration ceremonies to swear in Donald Trump as the 45th president of the United States at the U.S. Capitol in Washington, U.S. Photo by Lucas Jackson

People cool off at a water park, in Nanjing, Jiangsu province. Temperature hit 35 degrees Celsius (95 degrees Fahrenheit) in Nanjing on Saturday. Picture taken August 1, 2015. Photo by China Daily.

A firefighter attempts to extinguish a fire which broke out on piles of reed at a paper factory in Changde, Hunan province. No casualty was reported, according to local media. Picture taken February 16, 2014. Photo by Stringer

A child examines some of the dead farmed fish floating in Lake Maninjau, West Sumatra province Indonesia. Fishery officials say that up to 30 tonnes of farmed fish have died due to high winds on the lake. Photo by Iggoy el Fitra.

Indonesia’s Mount Soputan volcano spews lava and ash during an eruption as seen from Silian 3 village in Minahasa Tenggara, Indonesia’s Sulawesi island. Photo by Adwit B Pramono