People relax in the sun in the gardens of the Palais Royal in Paris on April 15, 2015.

Loic Venance/AFP

People relax in the sun in the gardens of the Palais Royal in Paris on Wednesday

An aerial view of flower fields is seen near the Keukenhof park, also known as the Garden of Europe, in Lisse, The Netherlands on Wednesday. Keukenhof, employing some 30 gardeners, is considered to be the world's largest flower garden displaying millions of flowers every year

Yves Herman/Reuters

An aerial view of flower fields is seen near the Keukenhof park, also known as the Garden of Europe, in Lisse, The Netherlands on Wednesday. Keukenhof is considered to be the world’s largest flower garden displaying millions of flowers every year

Anthem of the Seas arrives in Southampton...The world's joint third largest cruise ship, MS Anthem of the Seas, owned by Royal Caribbean, arrives at berth 101 in Southampton Docks ahead of her naming ceremony on 20 April. PRESS ASSOCIATION Photo. Picture date: Wednesday April 15, 2015.

Andrew Matthews/PA

The world’s joint third largest cruise ship, MS Anthem of the Seas, owned by Royal Caribbean, arrives at berth 101 in Southampton Docks ahead of her naming ceremony

Palestinian girls walk past rubble of heavily damaged buildings on Wednesday in the eastern Gaza City neighborhood of Shejaiya which was destroyed during the 50-day war between Israel and Hamas militants in the summer of 2014.

Thomas Coex/AFP

Palestinian girls walk past rubble of heavily damaged buildings on Wednesday in the eastern Gaza City neighborhood of Shejaiya which was destroyed during the 50-day war between Israel and Hamas militants in the summer of 2014

A protester jumps on the table in front of the European Central Bank President Draghi during a news conference in Frankfurt...A protester jumps on the table in front of the European Central Bank President Mario Draghi during a news conference in Frankfurt, April 15, 2015. The news conference was disrupted on Wednesday when a woman in a black T-shirt jumped on the podium.   REUTERS/Ralph Orlowski  TPX IMAGES OF THE DAY

Ralph Orlowski/Reuters

A protester jumps on the table in front of the European Central Bank President Mario Draghi during a news conference in Frankfurt. The news conference was disrupted on Wednesday when a woman in a black T-shirt jumped on the podium. 

A Papuan girl comforts her crying young sister in Wanam village, Papua province, Indonesia, Wednesday, April 15, 2015.

Dita Alangkara/AP

A Papuan girl comforts her crying young sister in Wanam village, Papua province, Indonesia on Wednesday

John John Florence of North Shore, Oahu, Hawaii (pictured) winning his round 1 heat of the Drug Aware Margaret River Pro at 'The Box' on Wednesday April 15, 2015. (World Surf League via AP)

AP

John John Florence of North Shore, Oahu, Hawaii winning his round one heat of the Drug Aware Margaret River Pro at ‘The Box’ on Wednesday 

A worker attaches the name tag of a Buddhist who made donation to a lantern, for upcoming celebration of Buddha's birthday on May 25 at the Jogye temple in Seoul, South Korea, Wednesday, April 15, 2015.

Lee Jin-man/AP

A worker attaches the name tag of a Buddhist who made a donation to a lantern, for upcoming celebration of Buddha’s birthday in May at the Jogye temple in Seoul, South Korea on Wednesday

Devotees celebrate "Sindoor Jatra" vermillion powder festival at Thimi...Devotees celebrate "Sindoor Jatra" vermillion powder festival at Thimi, in Bhaktapur April 15, 2015. The festival is celebrated by singing, dancing, playing traditional instruments, carrying chariots of various deities around the town, offering prayers and throwing vermilion powder over each other to mark the Nepalese New Year and the beginning of the spring season in the country. REUTERS/Navesh Chitrakar

Navesh Chitrakar/Reuters

Devotees celebrate the “Sindoor Jatra” vermillion powder festival at Thimi, in Bhaktapur, Nepal. The festival marks the country’s new year and the beginning of the spring season. 

The Empire State Building is lit in red ...The Empire State Building is lit in red and purple April 14, 2015 in New York as part of the effort to bring attention to the 219 missing Nigerian schoolgirls kidnapped by Boko Haram a year ago on April 14, 2014.  AFP PHOTO /  TIMOTHY  A. CLARYTIMOTHY A. CLARY/AFP/Getty Images

Timothy A.Clary/AFP/Getty

The Empire State Building is lit in red and purple in New York as part of efforts to bring attention to the 219 missing Nigerian schoolgirls kidnapped by Boko Haram a year ago. 

A worker lowers himself from a scaffold in front of a Hillary Clinton sign near her campaign headquarters in the Brooklyn borough of New York, April 14, 2015. An unknown entity placed  Don t say  signs outside Clinton's Brooklyn Heights headquarters before her announcement Sunday

Brendan McDermid/Reuters

A worker lowers himself from a scaffold in front of a Hillary Clinton sign near her campaign headquarters in the Brooklyn borough of New York on Tuesday

A woman walks past a piece of street art in Shoreditch, east London...A woman walks past a piece of street art in Shoreditch, east London, April 14, 2015.  REUTERS/Cathal McNaughton TPX IMAGES OF THE DAY

Cathal McNaughton/Reuters

A woman walks past a piece of street art in Shoreditch, east London 

US Marines stand at attention during the military exercise 'Platinum Lion 15-2' at the Novo Selo military base near the town of Sliven, some 290 kms from Sofia, Bulgaria on Tuesday. Bulgaria and the US are holding the joint military training at the Novo Selo site in Eastern Bulgaria, as part of the Bulgarian-American plan for joint military trainings and exercises scheduled in 2015

Vassil Donev/EPA

US Marines stand to attention during a military exercise at the Novo Selo military base near the town of Sliven, 290 km from Sofia, Bulgaria

Two actors dressed as roboters hold up an illuminated 4 - 0 lettering at the "Leaders Dialogue - Industry 4-0 Made in Germany" during the launch of the "Industry 4-0" platform at the Hannover Messe industrial trade fair in Hanover, central Germany.

Ole Spata/DPA/AFP

Two actors dressed as robots at the launch of the Industry 4-0 platform at the Hannover Messe industrial trade fair in Hanover, Germany

Stars are pictured over the famous Matterhorn mountain, seen from the Riffelberg area, in Zermatt, Switzerland.

Jean-Christophe Bott/Keystone/AP

Stars seen in the sky over the Matterhorn mountain, seen from the Riffelberg area, in Zermatt, Switzerland

A Bangladeshi child watches from behind soldiers of Bangladeshi Rapid Action Battalion a rally to celebrate the first day of the Bangla New Year in Dhaka, Bangladesh, Tuesday, April 14, 2015.

A.M. Ahad/AP

A child watches a rally to celebrate the first day of the Bangla New Year in Dhaka, Bangladesh, from behind soldiers of the Bangladeshi Rapid Action Battalion

Members of teh Bolivarian Militia take p...Members of teh Bolivarian Militia take part in its fifth anniversary in Caracas on April 13, 2015. AFP PHOTO/FEDERICO PARRAFEDERICO PARRA/AFP/Getty Images

Federico Parra/AFP/Getty Images

Members of the Bolivarian Militia take part in its fifth anniversary in Caracas, Venezuela

Stadium is seen after it was destroyed by an air strike in Yemen's central city of Ibb...ATTENTION EDITORS - REUTERS PICTURE HIGHLIGHT A stadium is seen after it was destroyed by an air strike in Yemen's central city of Ibb April

Reuters

A stadium after it was destroyed by an air strike in Ibb, the central city in Yemen 

People wearing costumes attend the annual water-splashing festival to mark the New Year of the Dai minority in Jinghong, Yunnan province.

China Daily/Reuters

People wearing costumes attend the annual water-splashing festival to mark the New Year of the Dai minority in Jinghong, Yunnan province, China

The remnant of Cyclone Joalane is seen in the moonlit Southern Indian Ocean in this picture taken by astronaut Terry Virts from NASA's International Space Station...The remnant of Cyclone Joalane appears in the moonlit Southern Indian Ocean, with the Milky Way rising behind it, as seen in this picture taken by astronaut Terry Virts from NASA's International Space Station April 13, 2015.   REUTERS/NASA/Terry Virts/Handout  THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS

Terry Virts/NASA/Reuters

The remnant of Cyclone Joalane appears in the moonlit Southern Indian Ocean, with the Milky Way rising behind it, as seen in this picture taken by astronaut Terry Virts from Nasa’s space station