Bianca Andreescu of Canada with the US Open championship trophy after beating Serena Williams of the USA in the women’s singles final on day thirteen of the 2019 U.S. Open tennis tournament at USTA Billie Jean King National Tennis Center. Mandatory Credit: Robert Deutsch-USA TODAY Sports TPX IMAGES OF THE DAY.

Britain's Prime Minister Boris Johnson attends a year six history class with pupils during a visit to Pimlico Primary school in London, Britain, September 10, 2019.

Dancers of China's Peacock Contemporary Dance Company perform Yang Liping's Rite of Spring during the International Contemporary Dance Festival DANCEINVERSION on the stage of Bolshoi Theatre in Moscow, Russia September 10, 2019.

Rescue workers on a boat rescue a person stranded inside a flooded tunnel after heavy floods in Pilar de la Horadada, Spain, September 13, 2019. REUTERS/Sergio Perez

Anti-extradition bill protesters hold hands up to form a human chain during a rally to call for political reforms in Hong Kong, China September 13, 2019.

Britain's Prince Harry and his wife Meghan, Duchess of Sussex, holding their son Archie, meet Archbishop Desmond Tutu (not pictured) at the Desmond & Leah Tutu Legacy Foundation in Cape Town, South Africa, September 25, 2019.

Ukraine's President Volodymyr Zelenskiy listens during a bilateral meeting with U.S. President Donald Trump on the sidelines of the 74th session of the United Nations General Assembly (UNGA) in New York City, New York, U.S., September 25, 2019.

Research technician Danielle Lasseigne cuts a Pseudodiploria strigosa coral with a steel chisel to remove the portion of the animal being killed by Stony Coral Tissue Loss Disease (SCTLD) near the University of the Virgin Islands campus in St Thomas in the U.S. Virgin Islands, May 15, 2019. REUTERS/Lucas Jackson

The Aurora Borealis (Northern Lights) is seen in the sky in Ivalo of Lapland, Finland September 27, 2019.

Traditional healer Bi Mwanahija Mzee, 56, massages three-month-old infant Abduli Juma in Zanzibar City, Tanzania, January 20, 2019. Abduli's mom, Semeni, brought him to the healer because he is very lethargic and can't hold his head up. Bi Mwanahija Mzee believes that the baby is possessed by supernatural sprits like djinns. However hospital doctors say he has an incurable brain issue. REUTERS/Nicky Woo

U.S. Senator and Democratic presidential candidate Elizabeth Warren speaks at Washington Square Park in New York, New York, U.S. September 16, 2019.

Participants dressed in traditional attire pose for pictures during rehearsals for Garba, a folk dance, in preparations for the upcoming Navratri, a festival during which devotees worship the Hindu goddess Durga, in Ahmedabad, India, September 25, 2019.

Britain's former Prime Minister Theresa May leaves the Houses of the Parliament in London, Britain, September 3, 2019.

Charred trees are pictured at the Nembi Guasu conservation area in Charagua, Bolivia, September 23, 2019.

General Motors assembly workers picket outside the General Motors Bowling Green plant during the United Auto Workers (UAW) national strike in Bowling Green, Kentucky, U.S., September 17, 2019.

Women cadets at a police academy listen to remarks from Ivanka Trump during the unveiling of a U.S. partnership with Colombia on Women, Peace, and Security (WPS) in Bogota, Colombia September 3, 2019.

Men carry a coffin of one of the victims after a drone strike, in Khogyani district of Nangarhar province, Afghanistan September 19, 2019.

A person wears a large costume during the annual West Indies Day parade in the borough of Brooklyn in New York City, New York, U.S. September 2, 2019.

Oscar Limachi, 48, a member of the local Qewaya community who works as a tour guide on Lake Titicaca, poses for a photograph in Qewaya village, Lake Titicaca, Bolivia, July 3, 2018. Limachi says that waste from El Alto and a lack of understanding about pollution risk changing the habitat forever. "It is also our fault, people throw garbage and plastic everywhere, they don't understand this is polluting," he says, adding that many plant varieties in the lake had already vanished. "Fish used to live, eat and lay their eggs amongst these plants. Now there are no plants, so no fish," he says. "We are afraid that someday the fish will disappear or migrate forever." REUTERS/Manuel Seoane

An anti-extradition bill protester is detained by riot police during a protest outside Mong Kok police station, in Hong Kong, China September 2, 2019.

U.S. President Donald Trump holds a chart showing the original projected track of Hurricane Dorian that appears to have been extended with a black line to include parts of the Florida panhandle and of the state of Alabama during a status report meeting on the hurricane in the Oval Office of the White House in Washington, U.S., September 4, 2019.

Secondary school students hold hands as they form a human chain demonstrating against what they say is police brutality against protesters, after clashes at Wan Chai district, in Hong Kong, China September 9, 2019.

A boy sits by the swimming pool at the Israeli settlement of Vered Yericho in the occupied West Bank September 11, 2019.

A Dambe boxer punches his opponent during the ancient brutal martial art of Dambe boxing, a sport associated with Hausa people of West Africa during a weekend match in Dei-Dei, Abuja, Nigeria June 30, 2019.

Money is seen in the back pocket of U.S. President Donald Trump as he boards Air Force One at Moffett Federal Airfield in Mountain View, California, U.S. September 17, 2019.

A gallery assistant poses in front of 'The Creator' by Damien Hirst during an exhibition of his new work entitled 'Mandalas' at the White Cube in London, Britain, September 19, 2019.

Guajajara Indians "forest guardians" detain a logger during a search for illegal loggers on Arariboia indigenous land near the city of Amarante, Maranhao state, Brazil, September 17, 2019. REUTERS/Ueslei Marcelino

British passengers board an Airbus A380 airliner that is being used for transporting Thomas Cook customers at Dalaman Airport after Thomas Cook, the world's oldest travel firm, collapsed stranding hundreds of thousands of holidaymakers around the globe and sparking the largest peacetime repatriation effort in British history, in Dalaman, Turkey, September 24, 2019.

Canada's Prime Minister Justin Trudeau at an election campaign rally hosted by Surrey-Centre candidate Randeep Sarai in British Columbia, Canada September 24, 2019.

A migrant boy, who returned to Mexico with his parents from the U.S. under the Migrant Protection Protocols (MPP) to wait for their court hearing for asylum seekers, plays at a migrant shelter run by the federal government in Ciudad Juarez, Mexico September 26, 2019.

An anti-government protester catches fire after throwing Molotov cocktail during a demonstration near Central Government Complex in Hong Kong, China, September 15, 2019.

A heron is seen near the Sevres river in Vertou near Nantes, France, September 23, 2019.

A migrant couple from Afghanistan hold their 20-day-old baby, as they are transferred on a minibus following a rescue operation by the Greek Coast Guard, in Skala Sikamias, on the island of Lesbos, Greece, September 29, 2019.

Personnel from the Royal Bahamas Police Force remove a body recovered in a destroyed neighbourhood in the wake of Hurricane Dorian in Marsh Harbour, Great Abaco, Bahamas, September 9, 2019.

Nigerian entrepreneur Basil Onibo, one of the victims of the latest spate of xenophobic attacks, looks at the burnt out cars at his dealership in Johannesburg, South Africa, September 5, 2019.

CEO Tim Cook presents the new iPhone 11 Pro at an Apple event at their headquarters in Cupertino, California, U.S. September 10, 2019.

Grace Mugabe sits below a portrait of her late husband, former Zimbabwean President Robert Mugabe, at her residence, The 'Blue Roof' in Borrowdale, Harare, Zimbabwe, September 11, 2019.

Remains of missiles, which Saudi government says were used to attack an Aramco oil facility, are displayed during a news conference in Riyadh, Saudi Arabia September 18, 2019. REUTERS/Hamad I Mohammed

Swedish environmental activist Greta Thunberg watches as U.S. President Donald Trump enters the United Nations to speak with reporters in a still image from video taken in New York City, U.S. September 23, 2019.

Students clash with police during a protest in Jakarta, September 25, 2019 in this photo taken by Antara Foto. Antara Foto/Indrianto Eko Suwarso/ via REUTERS.

Britain's Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS.

Boxing - Tyson Fury v Otto Wallin - T-Mobile Arena, Las Vegas, United States - September 14, 2019 Referee Tony Weeks during the fight.

A man carrying a toy gun walks along a street blocked by barricades during a general strike day to protest against the shortage of fuel and against the government, in Port-au-Prince, Haiti, September 16, 2019.

Iranian Turkmen popular armed company parade during the ceremony of the National Army Day parade in Tehran,Iran September 22, 2019. Official Iranian President website/Handout via REUTERS.

A protester holds a painting titled "Our House Is On Fire (Our Children Will Burn)" by artist Julia Vanderbyl depicting Swedish climate activist Greta Thunberg during the Fridays for Future climate change action protest in Paris, France, September 20, 2019. REUTERS/Charles Platiau TPX IMAGES OF THE DAY REFILE - ADDING THE PAINTING’S AUTHOR AND TITLE AND REMOVING RESTRICTIONS - RC13AB145B00

A tract of Amazon jungle burns as it is cleared by farmers in Rio Pardo, Rondonia, Brazil September 15, 2019.

An aerial photo shows Boeing 737 MAX aircraft at Boeing facilities at the Grant County International Airport in Moses Lake, Washington, September 16, 2019.

A Turkana tribeswoman reacts after an accidental fire of a shelter in Turkana settlement in Ilemi Triangle, Kenya, July 15, 2019. REUTERS/Goran Tomasevic