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A plume of smoke hangs in the air as forest fires rage on in the distance in Fort McMurray, Alberta on May 4, 2016.
Numerous vehicles can be seen abandoned on the highways leading from the raging forest fires in Fort McMurray and neighbouring communities have banded together to offer support in the form of food, water, and gasoline. / AFP / Cole Burston/ (Photo credit should read COLE BURSTON//AFP/Getty Images)
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Motorists travel south on Alberta Highway 63 as the setting sun illuminates a huge plume of smoke from wildfires burning in the distance rising over Fort McMurray, Alberta, Canada, on Wednesday, May 4, 2016. A fire fueled by shifting winds that forced more than 80,000 people to flee their homes and threatened the business district of oil-sands hub Fort McMurray, Canada, raged out of control Wednesday after consuming 80 square kilometers (30 square miles) of land and damaging 1,600 buildings. Photographer: Darryl Dyck/Bloomberg via Getty Images
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Singer-songwriter Lady Gaga attends the launch of "Love Bravery" by Lady Gaga and Sir Elton John at Macy's flagship store in Herald Square in New York, NY, on May 4, 2016. Twenty-five percent of sales of the clothing line will benefit Lady Gaga's Born This Way Foundation and Sir John's Elton John AIDS Foundation.
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LONDON, UNITED KINGDOM - MAY 04: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Catherine, Duchess of Cambridge visits the 'Vogue 100: A Century of Style' exhibition at the National Portrait Gallery on May 4, 2016 in London, England. The Duchess appears on the cover of the centenary issue in June 2016. (Photo by Max Mumby/Indigo/Getty Images)
Migrants and refugees scuffle with Greek policemen during a protest at the northern Greek border point of Idomeni, Greece, Thursday, May 5, 2016. Migrants and refigees protested against the poor camp conditions and the closed border. (AP Photo/Gregorio Borgia)
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LONDON, ENGLAND - MAY 05: Conservative Mayoral candidate, Zac Goldsmith, leaves a polling station with his wife Alice Miranda Goldsmith at Kitson Hall, Barnes after casting his vote on May 5, 2016 in London, England. This is the fifth mayoral election since the position was created in 2000. Previous London Mayors are Ken Livingstone for Labour and more recently Boris Johnson for the Conservatives. The main candidates for 2016 are Sadiq Khan, Labour, Zac Goldsmith , Conservative, Sian Berry, Green, Caroline Pidgeon, Liberal Democrat, George Galloway, Respect, Peter Whittle, UKIP and Sophie Walker, Woman's Equality Party. Results will be declared on Friday 6th May. (Photo by Chris Ratcliffe/Getty Images)
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Prime Minister David Cameron and wife Samantha arrive to cast their votes at a polling station in Westminster, central London.
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Labour party leader Jeremy Corbyn arrives to cast his vote at a polling station in Islington, north London.
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LONDON, UNITED KINGDOM - MAY 5: Britain's Labour Candidate for Mayor of London Sadiq Kahn (R) leaves polling station with his wife Saadiya after casting his vote, in south London, United Kingdom on May 5, 2016. (Photo by NEIL HALL/Anadolu Agency/Getty Images)
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GLASGOW, SCOTLAND - MAY 05: SNP Leader Nicola Sturgeon casts her vote in the Scottish Parliamentary election, with her husband Peter Murrel at Broomhouse Community Hall on May 5, 2016 in Glasgow, Scotland. Today, dubbed 'Super Thursday', sees the British public vote in countrywide elections to choose members for the Scottish Parliament, the Welsh Assembly, the Northern Ireland Assembly, Local Councils, a new London Mayor and Police and Crime Commissioners. There are around 45 million registered voters in the UK and polling stations open from 7am until 10pm. (Photo by Jeff J Mitchell/Getty Images)
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CHANDIGARH, INDIA - MAY 5: Chandigarh Police using water cannons to disperse Punjab Congress workers during their protest against Punjab Chief Minister Parkash Singh Badal over non-payment to farmers for wheat procurement at sector 15 -11 dividing road on May 4, 2016 in Chandigarh, India. (Photo by Karun Sharma/Hindustan times via Getty Images)
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WELLINGTON, NEW ZEALAND - MAY 05: Principal Vanessa Hendry of Porirua School walks through flood water after heavy rain caused flooding on May 5, 2016 in Porirua, New Zealand. Severe rain warnings have been issued for the bottom of the North Island, and and several schools and parts of the city have been closed due to surface floosing (Photo by Hagen Hopkins/Getty Images)
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ISE, JAPAN - MAY 05: Sun rise between the 'Meoto-Iwa' or couple rocks and over the sea ahead of the Oshimenawahari ceremony at Futami Okitama Shrine on May 5, 2016 in Ise, Japan. The Oshimenawahari ceremony is held three times a year to exchange the 35 meters long heavy rope made of rice straw that connects the sacred Couple Rock - one small, one big. The Couple Rock serves as a gate to the Okitama Shrine, dedicated to the god Sarutahiko and goddess Ukanomitama from Japanese myth. (Photo by Buddhika Weerasinghe/Getty Images)
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WARRNAMBOOL, AUSTRALIA - MAY 05: Richard Cully riding No Song No Supper heads to the start in front of the crowd on the hill before winning Race 7, Grand Annual Steeplechase during Grand Annual Day at Warrnambool Race Club on May 5, 2016 in Warrnambool, Australia. (Photo by Vince Caligiuri/Getty Images)
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WARRNAMBOOL, AUSTRALIA - MAY 05: Chief steward Terry Baily (L) is seen during Grand Annual Day at Warrnambool Race Club on May 5, 2016 in Warrnambool, Australia. (Photo by Vince Caligiuri/Getty Images)
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A demonstrator throws a glass bottle to riot policemen during a protest following the Nuit Debout ('Up All Night') movement in Paris, on April 22, 2016. The Nuit Debout 'Up All Night' protests that are sweeping France are increasingly being marred by violence and police have warned the organisers not to let their peaceful cause be hijacked by troublemakers. The 'Nuit Debout' demonstrations began in March in opposition to the government's proposed labour reforms, but the movement has now embraced a range of grievances and begun to take on a revolutionary feel. / AFP / Elliott VERDIER (Photo credit should read ELLIOTT VERDIER/AFP/Getty Images)
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US Secretary of State John Kerry kisses his granddaughter, Isabelle Dobbs-Higginson, after signing during the signature ceremony for the Paris Agreement at the United Nations General Assembly Hall on April 22, 2016 in New York. / AFP / JEWEL SAMAD (Photo credit should read JEWEL SAMAD/AFP/Getty Images)
Fans of Brazil's Corinthians light flares prior to a Copa Libertadores soccer match against Uruguay's Nacional in Sao Paulo, Brazil, Wednesday, May 4, 2016. (AP Photo/Andre Penner)
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TOPSHOT - Picture shows the Gandolfi 2 spacesuit outside the SHEE (Self-Deployable Habitat for Extreme Environments) during the Moonwalk project's first Mars mission simulation in the southwestern Spanish town of Minas de Riotinto, Huelva province, on April 22, 2016.
The goal of project MOONWALK is to develop and test technologies and training procedures for future human missions to Moon and Mars. / AFP / JORGE GUERRERO (Photo credit should read JORGE GUERRERO/AFP/Getty Images)
A woman uses her cellphone to take a picture American reality-show star Kim Kardashian West, center, and her husband Kanye West as they ride on a classic car along the streets of Havana, Cuba, Wednesday, May 4, 2016. Rap superstar Kanye West, his wife Kim Kardashian and members of her reality-show-star family have become the latest celebrities to visit Havana. They visited Havanaâs Museum of Rum Wednesday, stepping out of a hot-pink antique American convertible as they snapped selfies and were recorded by a television crew following them around. At right is Kourtney Mary Kardashian,(AP Photo/Desmond Boylan)
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Fishermen eat on the beach with Queen Elizabeth II projected on the Rock of Gibraltar in background to mark her 90th birthday on April 21, 2016. Queen Elizabeth II is set to celebrate her 90th birthday on April 21, with a family gathering and a cake baked by a reality television star, as a new poll finds Britain's longest serving monarch is as popular as ever. The queen has reigned for more than 63 years and shows no sign of retiring, even if she has in recent years passed on some of her duties to the younger royals. / AFP / JORGE GUERRERO (Photo credit should read JORGE GUERRERO/AFP/Getty Images)
In this image made from video, injured passengers of Etihad Flight EY474 receive medical treatment at the health facility at Soekarno-Hatta International Airport in Cengkareng, in the outskirt of Jakarta, Indonesia, Wednesday, May 4, 2016. Dozens of passengers and a crew member aboard the flight were injured Wednesday when their plane ran into sudden turbulence as it prepared to land in the Indonesian capital, Jakarta. (AP Photo/APTN)
Russian Air Force Su-25 jets fly over Moscow's Kremlin during a general rehearsal for the Victory Day military parade which will take place at Moscow's Red Square on May 9 to celebrate 71 years after the victory in WWII in Moscow, Russia, on Thursday, May 5, 2016. (AP Photo/Ivan Sekretarev)
Alamy Live News. G0WENA Headington, Oxford, UK. 5th May 2016. A polling station open for business in a laundrette for the local council elections. Andrew Walmsley/Alamy Live News This is an Alamy Live News image and may not be part of your current Alamy deal . If you are unsure, please contact our sales team to check.
A woman is carried away on a stretcher by medics as she is rescued after being trapped for six days in the rubble of a collapsed building, in the Huruma area of Nairobi, Kenya Thursday, May 5, 2016. After discovering the woman alive and conscious, rescuers administered an IV and oxygen but then had to work for a number of hours to free her from the rubble she was trapped in, before taking her away to hospital. (AP Photo/Ben Curtis)
A woman is carried away in a stretcher by medics as she is rescued after being trapped for six days in the rubble of a collapsed building, in the Huruma area of Nairobi, Kenya, Thursday, May 5, 2016. After discovering the woman alive and conscious, rescuers administered an IV and oxygen but then had to work for a number of hours to free her from the rubble she was trapped in, before taking her away to hospital. (AP Photo/Ben Curtis)