Britain's Secretary of State for Education Gillian Keegan arrives for a cabinet meeting at Downing Street, in London, Britain, October 26, 2022. REUTERS/Peter Nicholls 

Climate activists with dyed grey hair pose to promote the upcoming Strike for Future day on April 9, in front of the headquarters of Swiss bank Credit Suisse in Zurich, Switzerland March 22, 2022. REUTERS/Arnd Wiegmann 

Midas, a four-month-old kitten born with four ears, is pictured at her home in Ankara, Turkey November 19, 2021. REUTERS/Cagla Gurdogan 

A zebra is seen at Woburn Safari park before its opening as coronavirus disease (COVID-19) restrictions begin to ease, in Woburn, Britain April 11, 2021. REUTERS/Andrew Boyers TPX IMAGES OF THE DAY 

An elderly man works on a computer at his office in Peshawar, Pakistan October 11, 2018. REUTERS/Fayaz Aziz 

Patricia Spinoza, of Puna, takes a photo of lava on a lawn on the outskirts of Pahoa during ongoing eruptions of the Kilauea Volcano in Hawaii, U.S., May 14, 2018. REUTERS/Terray Sylvester 

A grey mullet is shown next to microplastic found in Hong Kong waters during a Greenpeace news conference in Hong Kong, China, April 23, 2018. REUTERS/Bobby Yip 

Inside the grey walls of an independent theatre in the northwest Romanian city of Cluj, Roma actress Elena Duminica braided the hair of her colleague Mihaela Dragan ahead of their show. As she braided, the theatre tested the lights for the play, "Gadjo Dildo", a cabaret-like performance inspired by real stories about the sexism and racism Roma women are often subject to in Romania. It is the first play staged by the Romanian feminist Roma theatre company Giuvlipen, which Dragan co-founded in 2014 because, she saw no alternative for the way Roma people were represented in the arts. "We advocate for Roma artists to have a voice, because Roma art was pretty marginalised and never valued, always stereotyped. I think this is our role, to make Roma art mainstream and cool, so that people come to our shows and talk about them." REUTERS/Andreea Campeanu SEARCH "CAMPEANU ROMA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY. Matching text: ROMANIA-THEATRE/ 

A man wears a pendant of the traditional "Virgen del Carmen" one day before arrival of the Pope Francis in Iquique, Chile, January 17, 2018. REUTERS/Rodrigo Garrido 

Dogs wait for their owner outside a polling station in Penally, Wales, Britain, June 8, 2017. REUTERS/Rebecca Naden TPX IMAGES OF THE DAY 

A Sadhu or Hindu holy man combs his beard after taking a dip in the waters of Shipra river during Simhastha Kumbh Mela in Ujjain, India May 16, 2016. REUTERS/Jitendra Prakash TPX IMAGES OF THE DAY

Tibetan spiritual leader the Dalai Lama jokes with Swiss journalist Frederic Koller of Le Temps/L'Hebod about his grey hair in Geneva, Switzerland March 11, 2016. REUTERS/Denis Balibouse 

Pornsak Bowornsrisuk talks to a colleague while running a bus terminal in downtown Bangkok, Thailand, February 3, 2016. Pornsak Bowornsrisuk pulls an umbrella towards him to shield his head of thick grey hair from the blazing sunshine at the Bangkok bus terminal he manages. "You've got to be damned tough to do this job," says the 63-year-old, who records bus arrivals and departures, and tots up fares collected from journeys across Thailand's capital. The World Bank estimates the working-age population will shrink by 11 percent by 2040, the fastest contraction among Southeast Asia's developing countries. Thailand's stage of economic development, the rising cost of living and education, and a population waiting longer to get married are among the reasons it is ageing more quickly than its neighbours. An effective contraception programme in the 1970s also played a part, said Sutayut Osornprasop, a human development specialist at the World Bank in Thailand. Picture taken February 3, 2016. REUTERS/Jorge Silva

Pornsak Bowornsrisuk sits on a bench while managing at a bus terminal in downtown Bangkok, Thailand, February 3, 2016. Pornsak Bowornsrisuk pulls an umbrella towards him to shield his head of thick grey hair from the blazing sunshine at the Bangkok bus terminal he manages. "You've got to be damned tough to do this job," says the 63-year-old, who records bus arrivals and departures, and tots up fares collected from journeys across Thailand's capital. Such scenes will only become more common in Thailand as its population rapidly ages, unlike its neighbours with more youthful populations. The World Bank estimates the working-age population will shrink by 11 percent by 2040, the fastest contraction among Southeast Asia's developing countries. Picture taken February 3, 2016. REUTERS/Jorge Silva TPX IMAGES OF THE DAY

Britain's Queen Elizabeth proceeds through the Royal Gallery before the State Opening of Parliament in the House of Lords, at the Palace of Westminster in London Britain May 27, 2015. REUTERS/Suzanne Plunkett TPX IMAGES OF THE DAY 

Women spray their designs on a wall during a graffiti class offered by the LATA 65 organization in Lisbon, Portugal May 14, 2015. The LATA 65 organization is an initiative for the elderly in the area of urban art. Since it began in 2012, they have introduced the world of graffiti to over 100 senior citizens, giving workshops in different neighborhoods of Lisbon. REUTERS/Rafael Marchante

A woman cries in front of the skulls and bones of more than 8,000 victims of the Khmer Rouge regime during a Buddhist ceremony at Choeung Ek, a "Killing Fields" site located on the outskirts of Phnom Penh, April 17, 2015. Hundreds of Cambodians and monks gathered at the site to commemorate the 40th anniversary of the Khmer Rouge reign, which plunged the nation into a radical communist group genocide regime from 1975-1979. REUTERS/Samrang Pring TPX IMAGES OF THE DAY

Pat Loveless of Tacoma Park, Maryland (L) and Victor King of Washington (R) march from the White House to the U.S. Capitol as part of an anti-war protest to mark the 12th anniversary of the U.S. invasion of Iraq, in Washington March 21, 2015. REUTERS/James Lawler Duggan TPX IMAGES OF THE DAY

A woman puts her forehead on the feet of the icon of Jesus de Meninaceli at the Basilica of Jesus de Medinaceli in central Madrid March 6, 2015. Thousands of worshipers venerate every year on the first Friday of March the icon of Jesus de Medinaceli, kissing his feet and asking for help. REUTERS/Andrea Comas (SPAIN - Tags: RELIGION TPX IMAGES OF THE DAY) 

U.S. President Barack Obama pauses while speaking during a visit to the University of Kansas in Lawrence, Kansas January 22, 2015. Obama left Washington on Wednesday for a two-day trip to Idaho and Kansas to push his State of the Union message that everyone should stand to gain from an economy that has all but recovered from years in the doldrums.

REUTERS/Kevin Lamarque (UNITED STATES - Tags: POLITICS BUSINESS TPX IMAGES OF THE DAY) 

Former FIA racing chief Max Mosley leaves the High Court in London January 14, 2015. Google Inc. sought on Wednesday to block a lawsuit filed against it by Max Mosley in the High Court in London over access through its search engine to images of the former motor racing chief taking part in a sex party. REUTERS/Stefan Wermuth (BRITAIN - Tags: CRIME LAW MEDIA TPX IMAGES OF THE DAY) 

Director of the Central Intelligence Agency (CIA) John Brennan pauses before answering a reporter's question during a rare news conference at CIA Headquarters in Virginia December 11, 2014. Brennan said on Thursday that some agency officers used "abhorrent" interrogation techniques and said it was "unknowable" whether so-called enhanced interrogation techniques managed to get useful intelligence out of terrorism suspects. REUTERS/Larry Downing (UNITED STATES - Tags: POLITICS HEADSHOT TPX IMAGES OF THE DAY) 

U.S. Secretary of Defense Chuck Hagel listens during his testimony at the House Armed Services Committee on Capitol Hill in Washington, November 13, 2014. REUTERS/Larry Downing (UNITED STATES - Tags: POLITICS MILITARY CONFLICT HEADSHOT TPX IMAGES OF THE DAY) 

Traders laugh as they work on the floor of the New York Stock Exchange as the market closes in New York October 17, 2014. REUTERS/Lucas Jackson (UNITED STATES - Tags: BUSINESS TPX IMAGES OF THE DAY) 

Professor John O'Keefe speaks at a news conference in London October 6, 2014. Anglo-American John O'Keefe and Norwegian couple May-Britt and Edvard Moser won the 2014 Nobel Prize for medicine on Monday for discovering the brain's internal positioning system, helping humans find their way and giving clues to how strokes and Alzheimer's affect the brain. REUTERS/Suzanne Plunkett (BRITAIN - Tags: SCIENCE TECHNOLOGY SOCIETY HEALTH) 

Secretary of State John Kerry testifies at a Senate Foreign Relations Committee hearing on "U.S. Strategy to Defeat the Islamic State in Iraq and the Levant" on Capitol Hill in Washington September 17, 2014. REUTERS/Joshua Roberts (UNITED STATES - Tags: POLITICS CIVIL UNREST CONFLICT TPX IMAGES OF THE DAY) 

A wild horse is seen during the "Rapa das Bestas" traditional event in the Spanish northwestern village of Sabucedo July 4, 2014. On the first weekend of the month of July, hundreds of wild horses are rounded up, trimmed and groomed in different villages in the Spanish northwestern region of Galicia. REUTERS/Miguel Vidal (SPAIN - Tags: SOCIETY ANIMALS TPX IMAGES OF THE DAY) 

A visitor prays at the gravesite of the Lubavitcher Rebbe, Rabbi Menachem Mendel Schneerson, at the Old Montefiore Cemetery in the Queens borough of New York June 30, 2014. Monday evening and all day Tuesday mark the 20th anniversary of the Rebbe's passing with organizers estimating 50,000 visitors to the site in tribute to the late Jewish leader. REUTERS/Shannon Stapleton (UNITED STATES - Tags: RELIGION SOCIETY TPX IMAGES OF THE DAY) 

The father of one of the two teenage girls, who were raped and hanged from a tree, weeps at his house at Budaun district in the northern Indian state of Uttar Pradesh May 31, 2014. India's new Home Minister Rajnath Singh weighed in on Friday in a grisly case in which two teenage girls were raped and hanged from a tree this week in Uttar Pradesh, as public anger and political controversy over the attack gain momentum. REUTERS/Anindito Mukherjee (INDIA - Tags: CRIME LAW TPX IMAGES OF THE DAY) 

Presidential candidate Hamdeen Sabahi (top R, grey hair) wait to cast his vote during the presidential election in Cairo May 26, 2014. Egyptians began voting on Monday in a two-day presidential election which Sisi is expected to win, reviving rule by strongman three years after the downfall of Hosni Mubarak. Voters cast ballots at heavily guarded polling stations from 9.00 a.m. (0600 GMT). Sisi, who deposed the Muslim Brotherhood's Mohamed Mursi last July, faces only one challenger in the two-day vote: the leftist politician Sabahi. REUTERS/Steve Crisp (EGYPT - Tags: POLITICS ELECTIONS CIVIL UNREST) 

Singer Bob Geldof attends a media launch of the Africa Progress Report 2014 in London May 8, 2014. REUTERS/Stefan Wermuth (BRITAIN - Tags: POLITICS) 

Entertainer Rolf Harris leaves Southwark Crown Court in central London May 6, 2014. Harris is charged with indecent assault, and denies the charges. REUTERS/Stefan Wermuth (BRITAINMEDIA SOCIETY - Tags: MEDIA CRIME LAW SOCIETY) 

A couple watch through the fence at Jonathan Law High School during a vigil for slain student Maren Sanchez in Milford, Connecticut April 28, 2014. Sanchez, 16 was killed on Friday in a stairwell at the school by a classmate who may have been upset that she rebuffed his invitation to the prom, police said. REUTERS/Michelle McLoughlin (UNITED STATES - Tags: CRIME LAW EDUCATION) 

A cat sleeps on a cushion at the cat cafe in New York April 23, 2014. The cat cafe is a pop-up promotional cafe that features cats and beverages in the Bowery section of Manhattan. REUTERS/Carlo Allegri (UNITED STATES - Tags: SOCIETY ANIMALS) 

A family member of a missing passenger onboard the South Korean ferry Sewol which capsized on Wednesday, looks at a screen showing a message describing the look and dressing of a newly found body by a rescue team, at a port in Jindo April 19, 2014. Some relatives of the more than 200 children missing in the sunken South Korean ferry offered DNA swabs on Saturday to help identify the dead as the rescue turned into a mission to recover the vessel and the bodies of those on board. The message on the screen reads, "19:10 The 33th female body was salvaged. Wearing grey sports attire (Jeep brand hoodie T-shirt), short hair, height of 160-163 cm, wearing a life jacket." REUTERS/Kim Kyung-Hoon (SOUTH KOREA - Tags: DISASTER) 

A man is reflected in an electronic stock quotation board outside a brokerage in Tokyo April 11, 2014. Japanese shares tumbled to six-month lows on Friday and could log their worst performance since the March 2011 tsunami and nuclear disaster after a rout in U.S. tech shares spurred selling by momentum players. REUTERS/Issei Kato (JAPAN - Tags: BUSINESS EMPLOYMENT TPX IMAGES OF THE DAY) 

A supporter of Afghan presidential candidate Abdullah Abdullah attends the final day of election campaigning outside Kabul April 2, 2014. The Afghan presidential elections will be held on April 5. REUTERS/Ahmad Masood (AFGHANISTAN - Tags: POLITICS ELECTIONS TPX IMAGES OF THE DAY) 

A Crimean Tatar sits in the Khan Chair mosque after Friday prayers in Bakhchisaray, near Simferopol March 7, 2014. Earlier this month, Tatars of Ukraine's Crimea came out in their thousands, chanting Allahu Akbar in a show of loyalty to the new authorities in Kiev and opposition to separatist demands by the region's Russian ethnic majority.
But now, with Moscow's military forces having unexpectedly seized control, the indigenous Muslim people of the isolated Black Sea peninsula have all but vanished from the public square, keeping their heads down to avoid being sucked into war. REUTERS/Thomas Peter (UKRAINE - Tags: POLITICS RELIGION) 

Anti-government protest leader Suthep Thaugsuban speaks to his supporters in central Bangkok February 4, 2014. REUTERS/Nir Elias (THAILAND - Tags: CIVIL UNREST POLITICS TPX IMAGES OF THE DAY) 

Cuba's former president Fidel Castro attends the inauguration of the Cultural Center, Studio Kcho Romerillo, Laboratory for Art, in Havana in this picture taken on January 8, 2014. Castro made a surprise appearance on Wednesday evening at the opening of a Havana cultural centre sponsored by one of his favourite Cuban artists. State television on Thursday broadcast images of Castro arriving at the cultural centre in a blue van, to the applause of local residents. The bearded, grey haired Cuban leader, 87, was also shown sitting and chatting with Alexis Leyva, the painter and sculptor known as Kcho, and others attending the opening. REUTERS/Courtesy of Cubadebate/Revolution Studios/Handout (CUBA - Tags: POLITICS EDUCATION MILITARY) ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS PICTURE WAS PROVIDED BY A THIRD PARTY. REUTERS IS UNABLE TO INDEPENDENTLY VERIFY THE AUTHENTICITY, CONTENT, LOCATION OR DATE OF THIS IMAGE. THIS PICTURE IS DISTRIBUTED EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS. 

Clara Gantt, the 94-year-old widow of U.S. Army Sgt. Joseph Gantt, weeps in front of her her husband's casket after it was lowered from the plane before dawn on the tarmac at Los Angeles International Airport in Los Angeles, California December 20, 2013. Gantt, who never remarried after her husband died in captivity in the Korean War in 1951, had a tearful encounter with his flag-draped coffin on Friday in Los Angeles, when his recently identified remains arrived by plane. REUTERS/Andrew Renneisen/Los Angeles Times/Pool (UNITED STATES - Tags: MILITARY OBITUARY TPX IMAGES OF THE DAY CONFLICT) MANDATORY CREDIT 

German Greens lawmaker Hans-Christian Stroebele holds a letter he received from fugitive former U.S. spy agency contractor Edward Snowden, at a news conference in Berlin, November 1, 2013. Stroebele met Snowden in Moscow on Thursday, Stroebele's office said in a statement, and would give details of the meeting on Friday. REUTERS/Tobias Schwarz (GERMANY - Tags: POLITICS CRIME LAW)

Israel's Prime Minister Benjamin Netanyahu attends the weekly cabinet meeting in Jerusalem August 25, 2013. Netanyahu said on Sunday chemical weapons use in Syria cannot be tolerated, as Washington considers its response to the killing of hundreds of civilians in an alleged poison gas attack. REUTERS/Dan Balilty/Pool (JERUSALEM - Tags: POLITICS CONFLICT HEADSHOT) 

Competitors of "Queen of the Elderly 2013" beauty contest perform together on stage in a theatre in Monterrey August 14, 2013. 18 finalists will be chosen to compete in the final event on August 23. REUTERS/Daniel Becerril (MEXICO - Tags: SOCIETY) 

Chelsea pensioners toast the birth of a baby boy born to Britain's Prince William and Catherine, Duchess of Cambridge at the Royal Chelsea Hospital in London July 23, 2013. Prince William's wife Kate gave birth to a boy on Monday, the couple's first child and the third in line to the British throne, heralding celebrations in London and messages of goodwill from across the world. REUTERS/Neil Hall (BRITAIN - Tags: SOCIETY ROYALS ENTERTAINMENT MILITARY TPX IMAGES OF THE DAY) 

A nun prays during an early morning mass at Regina Mundi Church in Soweto June 30, 2013. Former South African president Nelson Mandela's condition remains "critical but stable" but the government hopes the 94-year-old anti-apartheid hero will be out of hospital soon, President Jacob Zuma said on Saturday. REUTERS/Kevin Coombs (SOUTH AFRICA - Tags: RELIGION POLITICS HEALTH) 

A combination photo shows U.S. President Barack Obama on April 29, 2009 and on August 5, 2012. Obama's hair has become visibly greyer since he was first sworn into office on January 20, 2009 as a 47-year-old. Now, over four years into a presidency which has been marked by issues including bitter partisan struggles in Washington, a sluggish economy and the ongoing war in Afghanistan, his hair is noticeably more flecked with white. Obama has joked about his changing hair, including at the annual White House Correspondents' Association dinner on April 27, 2013 when he commented: "Time passes. You get a little grey."REUTERS/Jason Reed (top) and Jonathan Ernst/Files (UNITED STATES - Tags: POLITICS HEADSHOT) 

A combination photo shows Barack Obama as the Democratic presidential candidate on May 22, 2008 (top) and as U.S. President on February 13, 2013. Obama's hair has become visibly greyer since he was first sworn into office on January 20, 2009 as a 47-year-old. Now, over four years into a presidency which has been marked by issues including bitter partisan struggles in Washington, a sluggish economy and the ongoing war in Afghanistan, his hair is noticeably more flecked with white. Obama has joked about his changing hair, including at the annual White House Correspondents' Association dinner on April 27, 2013 when he commented: "Time passes. You get a little grey." REUTERS/Carlos Barria (top) and Jonathan Ernst/Files (UNITED STATES - Tags: POLITICS HEADSHOT) 

A combination photo shows U.S. President Barack Obama on April 29, 2009 (top) and on May 15, 2013. Obama's hair has become visibly greyer since he was first sworn into office on January 20, 2009 as a 47-year-old. Now, over four years into a presidency which has been marked by issues including bitter partisan struggles in Washington, a sluggish economy and the ongoing war in Afghanistan, his hair is noticeably more flecked with white. Obama has joked about his changing hair, including at the annual White House Correspondents' Association dinner on April 27, 2013 when he commented: "Time passes. You get a little grey." REUTERS/Larry Downing (top) and Kevin Lamarque/Files (UNITED STATES - Tags: POLITICS HEADSHOT) 

A combination photo shows Barack Obama as Democratic presidential candidate on December 27, 2007 (top) and as U.S. President on February 7, 2013. Obama's hair has become visibly greyer since he was first sworn into office on January 20, 2009 as a 47-year-old. Now, over four years into a presidency which has been marked by issues including bitter partisan struggles in Washington, a sluggish economy and the ongoing war in Afghanistan, his hair is noticeably more flecked with white. Obama has joked about his changing hair, including at the annual White House Correspondents' Association dinner on April 27, 2013 when he commented: "Time passes. You get a little grey." REUTERS/Jim Young (top) and Kevin Lamarque/Files (UNITED STATES - Tags: POLITICS HEADSHOT) 

Britain's Queen Elizabeth arrives for the State Opening of Parliament, at the Palace of Westminster in London May 8, 2013. REUTERS/Dan Kitwood/POOL (BRITAIN - Tags: ENTERTAINMENT POLITICS ROYALS TPX IMAGES OF THE DAY) 

International Monetary Fund (IMF) Managing Director Christine Lagarde attends a meeting with the Economic Club of New York in New York, April 10, 2013. REUTERS/Brendan McDermid (UNITED STATES - Tags: POLITICS BUSINESS) 

U.S. Vice President Joseph Biden gestures as he speaks about the need for common sense gun reform at the White House in Washington, April 9, 2013. REUTERS/Larry Downing (UNITED STATES - Tags: POLITICS CRIME LAW) 

A visually impaired woman touches a wall to guide herself down a street in downtown Guatemala City April 8, 2013.
REUTERS/Jorge Dan Lopez (GUATEMALA - Tags: SOCIETY) 

Palestinian President Mahmoud Abbas prays for Maysara Abu Hamdeya, a Palestinian inmate who died from cancer in an Israeli hospital on Tuesday, during a Fatah Central Committee meeting in the West Bank city of Ramallah April 2, 2013. Hamdeya's death threatened to raise tensions in the Israeli-occupied West Bank, where Palestinians, who view jailed brethren as heroes in a fight for statehood, have held several protests in recent weeks in support of prisoners. REUTERS/Mohamed Torokman (WEST BANK - Tags: POLITICS TPX IMAGES OF THE DAY) 

Arizona Women's Shooting Associates and NRA certified instructor Carol Ruh gestures while holding a blue dummy handgun to her head as she teaches a gun safety training class at Ben Avery Shooting Facility in Phoenix, Arizona, March 13, 2013. Ruh educates her students on the proper way to hold, aim, shoot and load a firearm along with other safety tips. Picture taken March 13, 2013. REUTERS/Joshua Lott (UNITED STATES - Tags: SOCIETY EDUCATION) 

People pray after learning of the newly elected Pope Francis at the Cathedral of Our Lady of the Angels in Los Angeles, California, March 13, 2013. Jorge Mario Bergoglio of Argentina was elected in a surprise choice to be the new leader of the troubled Roman Catholic Church on Wednesday, the first non-European pontiff in nearly 1,300 years, and said he would take the name Francis I. REUTERS/Lucy Nicholson (UNITED STATES - Tags: RELIGION) 

Mange Lal Singh (L) and Ram Bai (R), father and mother of Ram Singh, the driver of the bus in which a young woman was gang-raped and fatally injured three months ago, sit inside their house at Ravi Das camp in New Delhi March 11, 2013. Ram Singh hanged himself in his jail cell on Monday, prison authorities said, but his family and lawyer said they suspected "foul play". Singh, the main accused in India's most high-profile criminal case, killed himself in a cell he shared with three other inmates in New Delhi's Tihar jail just before dawn, prison spokesman Sunil Gupta said. Ravi Das camp is the slum where four of the six accused in the rape case including Singh reside at. REUTERS/Mansi Thapliyal (INDIA - Tags: CRIME LAW) 

A woman is seen inside a tram in downtown Lisbon February 22, 2013. REUTERS/Rafael Marchante (PORTUGAL - Tags: SOCIETY TRANSPORT)