Afghan labourer Hamid Gul, 25, working at a brick factory on the outskirts Mazar-i-Sharif

Farshad Usyan/AFP

Afghan labourer Hamid Gul, 25, working at a brick factory on the outskirts Mazar-i-Sharif 

 A Ground crew member from the United States Navy VFA-115 squadron inspects the tail of a FA/18E Super Hornet

Ian Hitchcock/Getty

A Ground crew member from the United States Navy VFA-115 squadron inspects the tail of a FA/18E Super Hornet in its hangar athe Townsville airport in Australia. Exercise Black Dagger is a field training exercise held at RAAF Base Townsville and surrounding airspace from 1 to 15 April.

A man crosses a flooded street during rainfall in Shanghai

Johannes Eisele/AFP

A man crosses a flooded street during rainfall in Shanghai 

Attendees cheer for Senator Ted Cruz, a Republican from Texas and 2016 presidential candidate, not pictured, during a campaign event in Milwaukee

Daniel Acker/Bloomberg

Attendees cheer for Senator Ted Cruz, a Republican from Texas and 2016 presidential candidate, not pictured, during a campaign event in Milwaukee, Wisconsin, U.S.

ANA Welcomes New Recruits

Tomohiro Ohsumi/Getty

Newly hired employees hold up banners for a group photograph during the welcome ceremony of ANA Holdings Inc. at the company’s hanger in Tokyo, Japan

Women chat as they look at cherry blossoms in almost full bloom in Tokyo

Issei Kato/Reuters

Women chat as they look at cherry blossoms in almost full bloom in Tokyo

People walk during a polluted day in Shenyang

Stringer/Reuters

People walk during a polluted day in Shenyang

A shadow of migrants wait for food in the makeshift refugee camp at the northern Greek border point of Idomeni, Greece

Darko Vojinovic/AP

A shadow of migrants wait for food in the makeshift refugee camp at the northern Greek border point of Idomeni, Greece

Macedonian Army soldiers patrol between the two-line fence set along the border line between Macedonia and Greece, near southern Macedonian town of Gevgelija

Boris Grdanoski/AP

Macedonian Army soldiers patrol between the two-line fence set along the border line between Macedonia and Greece, near southern Macedonian town of Gevgelija

Blue Man Group performs during a media preview in Singapore

Wong Maye-E/AP

Blue Man Group performs during a media preview in Singapore 

U.S. President Barack Obama dances tango during a state dinner hosted by Argentina's President Mauricio Macri at the Centro Cultural Kirchner as part of President Obama's two-day visit to Argentina, in Buenos Aires

Carlos Barria/Reuters

U.S. President Barack Obama dances tango during a state dinner hosted by Argentina’s President Mauricio Macri at the Centro Cultural Kirchner as part of President Obama’s two-day visit to Argentina, in Buenos Aires. 

A man washes his face close to a shelter for refugees and migrants at the port of Piraeus, near Athens, Greece

Reuters/Michalis Karagiannis

A man washes his face close to a shelter for refugees and migrants at the port of Piraeus, near Athens, Greece

The plane carrying Expedition 46 Commander Scott Kelly of NASA is seen as it taxis after landing at Ellington Field after his return to Earth

Joel Kowsky/NASA via Getty Images

The plane carrying Expedition 46 Commander Scott Kelly of NASA is seen as it taxis after landing at Ellington Field after his return to Earth

Refugees walk to a registration camp after crossing the border  Greek-Macedonian near the town of Gevgelija

Dimitar Dilkoff/AFP

Refugees walk to a registration camp after crossing the Greek-Macedonian border near the town of Gevgelija

A woman walks through artwork created by artist Filippo Minelli in his series Silence / Shapes in Somerset House

Kirsty Wigglesworth/AP

A woman walks through artwork created by artist Filippo Minelli in his series Silence / Shapes, in Somerset House courtyard, London

A security guard patrols at a construction site in front of Petronas Twin Tower

Joshua Paul/AP

A security guard patrols at a construction site in front of Petronas Twin Towers, center, in Kuala Lumpur, Malaysia

Soyuz TMA-18M space capsule carrying the International Space Station (ISS) crew members prepares to land in a remote area outside the town of Dzhezkazgan, Kazakhstan

Krill Kudryavtsev/AP

Soyuz TMA-18M space capsule carrying the International Space Station (ISS) crew members prepares to land in a remote area outside the town of Dzhezkazgan, Kazakhstan

A Sotheby's employee stands infront of a series of portraits of the Mitford Sisters during the pre-auction preview of the personal collection of Deborah Cavendish, Duchess of Devonshire at Sotheby's

Justin Setterfield/Getty Images

A Sotheby’s employee stands infront of a series of portraits of the Mitford Sisters during the pre-auction preview of the personal collection of Deborah Cavendish, Duchess of Devonshire at Sotheby’s

A man pushes a baby in a stroller in front of tents at the transit center for refugees near northern Macedonian village of Tabanovce

Boris Grdanoski/AP

A man pushes a baby in a stroller in front of tents at the transit center for refugees near northern Macedonian village of Tabanovce

Opposition party supporters keep warm by a fire as they gather in front of Kosovo's government building in Pristina

Armend Nimani/AFP

Opposition party supporters keep warm by a fire as they gather in front of Kosovo’s government building in Pristina