President Barack Obama uses a Virtual Reality device next to the German Chancellor at the booth of the German automation company IFM Electronic, as the two toured the Hanover Industrial Fair in Hanover, Germany, on April 25, 2016. #

“Solar Impulse 2,” a solar-powered plane piloted by Bertrand Piccard of Switzerland, flies over the Golden Gate bridge in San Francisco, California, on April 23, 2016, before landing on Moffett Airfield following a 62-hour flight from Hawaii. #

A Dinka girl stands at a cattle camp in Toch, Warrap state, in South Sudan on April 24, 2016. The camp houses over 10,000 Ankoli longhorn cattle and is supported by Veterinaires Sans Frontieres-Germany which helps the farmers with medicine and vaccines. #

A Love Doll is exhibited at Vanilla Gallery on April 28, 2016 in Tokyo, Japan. The Japanese sex doll maker Orient Industry exhibited their life size Love Dolls in “Artificial OTOME (girl) Museum,” in collaboration with Vanilla Gallery. The main market for these Love Dolls are not only the collectors who love to live with them, but also others including widowers. #

A tugboat pulling a barge transporting NASA's last space shuttle external tank makes its way through the Panama Canal in Panama City on April 26, 2016. The external tank is crossing the Panama Canal on its way to a display venue in California. #

A picture of hands holding smartphones taking pictures of hands holding smartphones, as audience members await Republican presidential candidate Donald Trump before a campaign rally at West Chester University in West Chester, Pennsylvania, on April 25, 2016. #

A dog looks out from a cage at a dog farm during a media visit organised by the Humane Society International in Wonju, southeast of Seoul, on April 27, 2016. The dogs were being transported to the US. The business was the fifth and the largest dog meat farm to be closed down by the Humane Society International. The dogs in the farm, one of thousands across the country, were bred specifically for consumption and confined in their cages from birth until slaughtered for their meat. South Koreans are believed to consume somewhere between 1.5 million and 2.5 million dogs every year, but the meat farming industry is in decline, with little demand among the younger generation. #

People look at a replica of a “Transformer,” made by a fan, in Shangqiu, Henan Province, China, on April 22, 2016. According to local media, the owner took a year to build the replica, which is made of vehicle components and weighted about 17 tons. #

Oil slicks are seen in the water after an artificial dam was set in the Polcevera creek to stop pollution, on April 24, 2016, in Genoa. The oil slicks formed after an April 17 pipeline leak at an aging refinery near Genoa which resulted in 680,000 litres of crude spilling into the Polcevera river, which flows into the Mediterranean at Genoa. #

Syrians evacuate a toddler from a destroyed building following a reported air strike on the rebel-held neighbourhood of al-Kalasa in the northern Syrian city of Aleppo, on April 28, 2016. #

Candidates, many barefoot and unable to afford running shoes, are tagged with chips used to record their distance, as they wait for their turn to run during a recruitment drive for the Uttar Pradesh state police, in Allahabad, India, on April 26, 2016. A state-wide recruitment process has recently been started to fill thousands of vacant police constable posts. #

A pilot looks up from a U.S. F-22 Raptor fighter as it prepares to refuel in mid-air with a KC-135 refuelling plane over European airspace during a flight to Britain from Mihail Kogalniceanu air base in Romania on April 25, 2016. #

Patsy Gibbons takes his two rescue foxes, Grainne and Minnie (unseen), for a walk in Kilkenny, Ireland, on April 25, 2016. Gibbons nursed the foxes back to health after they were found abandoned as injured cubs, and they have stayed with him since. #

Delhi Fire officials leave the National Museum of Natural History after controlling a fire in the building, in New Delhi, India, on April 26, 2016. A massive fire gutted India's National Museum of Natural History early Tuesday. #

Nursing school students Sarah Hampel, left, and Alexandra Noga interact with a mannequin to learn how to respond to real-life medical situations, including emergencies, in Ann Arbor, Michigan. The high-fidelity mannequins reside in six simulation rooms set up inside the Ann Arbor school's new Clinical Learning Center. They can bleed, vomit, and give birth, just like real patients. #

A handout photo issued by Kensington Palace of Prince George (right) meeting the U.S. President Barack Obama and First Lady Michelle Obama at Kensington Palace, London, with Britain's Prince William, on April 22, 2016. #

The artist Chin Chih Yang poses after his performance “Kill Me or Change” with 30,000 cans falling and burying the artist underneath a mountain of garbage, at the Museum of Contemporary Art in Taipei, Taiwan, on April 23, 2016. #

The Security for the U.S. Ambassador to the UN, Samantha Power, stands guard as she visits the Malkohi Internally Displaced Person Camp in Yola, Nigeria, on April 22, 2016. Power was traveling to Cameroon, Chad, and Nigeria to highlight the growing threat Boko Haram poses to the Lake Chad Basin region. #

A Kashmiri-masked Muslim protester jumps in the air to avoid stones thrown at him by Indian police during a protest in Srinagar, Indian controlled Kashmir, on April 29, 2016. Government forces fired tear gas and pellet guns to stop rock-throwing Kashmiri youths after Friday prayers. The demonstrators were responding to a protest call by anti-India separatist leaders against, what they said, government's failure to arrest the troops involved in the recent killing of five civilians following an alleged molestation of a teenage girl student by an Indian soldier. #

A Palestinian bedouin shepherd pulls a lamb into the water to wash it in Gaza City, on April 29, 2016. Every year before the beginning of the summer, shepherds wash their herds in the sea. #