Co-founder of Wikipedia, Jimmy Wales, speaks at the Ministry of Fun Santa School, as it develops an online app for children to speak with Santa during the Christmas season, as the continuation of the coronavirus disease (COVID-19) pandemic means most in-person Santa's Grotto experiences will have to be cancelled, London, Britain, November 10, 2020. REUTERS/Toby Melville 

A face mask and hand sanitiser are seen on a desk as students take part in a training session at the Ministry of Fun Santa School, as it develops an online app for children to speak with Santa during the Christmas season, as the continuation of the coronavirus disease (COVID-19) pandemic means most in-person Santa's Grotto experiences will have to be cancelled, London, Britain, November 10, 2020. REUTERS/Toby Melville 

Students take part in a training session at the Ministry of Fun Santa School, as it develops an online app for children to speak with Santa during the Christmas season, as the continuation of the coronavirus disease (COVID-19) pandemic means most in-person Santa's Grotto experiences will have to be cancelled, London, Britain, November 10, 2020. REUTERS/Toby Melville 

Students take part in a training session at the Ministry of Fun Santa School, as it develops an online app for children to speak with Santa during the Christmas season, as the continuation of the coronavirus disease (COVID-19) pandemic means most in-person Santa's Grotto experiences will have to be cancelled, London, Britain, November 10, 2020. REUTERS/Toby Melville 

Students take part in a training session at the Ministry of Fun Santa School, as it develops an online app for children to speak with Santa during the Christmas season, as the continuation of the coronavirus disease (COVID-19) pandemic means most in-person Santa's Grotto experiences will have to be cancelled, London, Britain, November 10, 2020. REUTERS/Toby Melville 

Students take part in a training session at the Ministry of Fun Santa School, as it develops an online app for children to speak with Santa during the Christmas season, as the continuation of the coronavirus disease (COVID-19) pandemic means most in-person Santa's Grotto experiences will have to be cancelled, London, Britain, November 10, 2020. REUTERS/Toby Melville 

A participant dressed up in a Gamora costume attends the 2020 Prague Comic Con in Prague, Czech Republic, February 8, 2020. REUTERS/David W Cerny 

People walk past a Giant SAD (Seasonal Affective Disorder) installation, named 'The Light Station', inside Southwark Bridge Tunnel in central London, Britain December 18 2018. REUTERS/Henry Nicholls 

A person walks past a Giant SAD (Seasonal Affective Disorder) installation, named 'The Light Station', inside Southwark Bridge Tunnel in central London, Britain December 18 2018. REUTERS/Henry Nicholls 

People walk past a Giant SAD (Seasonal Affective Disorder) installation, named 'The Light Station', inside Southwark Bridge Tunnel in central London, Britain December 18 2018. REUTERS/Henry Nicholls 

Participants of the techno-parade "Zug der Liebe" ("Train of love") dance on a scaffold in the street in Berlin, Germany, August 25, 2018. REUTERS/Michele Tantussi 

Participants of the techno-parade "Zug der Liebe" ("Train of love") dance on a street in Berlin, Germany, August 25, 2018. REUTERS/Michele Tantussi 

Participants of the techno-parade "Zug der Liebe" ("Train of love") dance on a street in Berlin, Germany, August 25, 2018. REUTERS/Michele Tantussi 

Children wear ear protection as they participate in the techno-parade "Zug der Liebe" ("Train of love") dance on a street in Berlin, Germany, August 25, 2018. REUTERS/Michele Tantussi 

A Participant of the techno-parade "Zug der Liebe" ("Train of love") with a sign reading "You need power only if you want something evil, for everything else, love is enough", walks on a street in Berlin, Germany, August 25, 2018. REUTERS/Michele Tantussi 

Participants of the techno-parade "Zug der Liebe" ("Train of love") walk on a street in Berlin, Germany, August 25, 2018. REUTERS/Michele Tantussi 

A Participant of the techno-parade "Zug der Liebe" ("Train of love") walks on a street in Berlin, Germany, August 25, 2018. REUTERS/Michele Tantussi 

A Participant of the techno-parade "Zug der Liebe" ("Train of love") walks on a street in Berlin, Germany, August 25, 2018. REUTERS/Michele Tantussi 

Crowd is seen arriving at King Abdulaziz Center for World Culture (ITHRA) ahead of Russian theater orchestra The Marilinsky Orchestra held in Saudi for the first time as part of Eid celebrations in Dhahran, Saudi Arabia, June 16, 2018. Picture taken June 16, 2018. REUTERS/Hamad I Mohammed 

Russian's Deputy Prime Minister, Olga Golodets, (L) and Cheif Executive Officer of Russian Direct Investment Fund, Kirill Dmitriev (R) arrive at the press center of King Abdulaziz Center for World Culture (ITHRA) ahead of Russian theatre orchestra The Marilinsky Orchestra held in Saudi for the first time as part of Eid celebrations in Dhahran, Saudi Arabia, June 16, 2018. Picture taken June 16, 2018. REUTERS/Hamad I Mohammed 

Maestro, Valery Gergiev arrives at the stage for The Marilinsky Orchestra held in Saudi Arabia for the first time as part of Eid celebrations, at King Abdulaziz Center for World Culture (ITHRA) in Dhahran, Saudi Arabia, June 16, 2018. Picture taken June 16, 2018. REUTERS/Hamad I Mohammed 

Russian's Deputy Prime Minister, Olga Golodets, (C) and Cheif Executive Officer of Russian Direct Investment Fund, Kirill Dmitriev (R) arrive at the press center of King Abdulaziz Center for World Culture (ITHRA) ahead of Russian theatre orchestra The Marilinsky Orchestra held in Saudi for the first time as part of Eid celebrations in Dhahran, Saudi Arabia, June 16, 2018. Picture taken June 16, 2018. REUTERS/Hamad I Mohammed 

Maestro, Valery Gergiev arrives at the stage for The Marilinsky Orchestra held in Saudi Arabia for the first time as part of Eid celebrations, at King Abdulaziz Center for World Culture (ITHRA) in Dhahran, Saudi Arabia, June 16, 2018. Picture taken June 16, 2018. REUTERS/Hamad I Mohammed 

Maestro, Valery Gergiev arrives at the stage for The Marilinsky Orchestra held in Saudi Arabia for the first time as part of Eid celebrations, at King Abdulaziz Center for World Culture (ITHRA) in Dhahran, Saudi Arabia, June 16, 2018. Picture taken June 16, 2018. REUTERS/Hamad I Mohammed 

Crowd is seen lining up waiting for doors to open at King Abdulaziz Center for World Culture (ITHRA) ahead of Russian theatre orchestra The Marilinsky Orchestra held in Saudi for the first time as part of Eid celebrations in Dhahran, Saudi Arabia, June 16, 2018. Picture taken June 16, 2018. REUTERS/Hamad I Mohammed 

Cheif Executive Officer of Russian Direct Investment Fund, Kirill Dmitriev speaks to media during a news conference at King Abdulaziz Center for World Culture (ITHRA) ahead of Russian theater orchestra The Marilinsky Orchestra held in Saudi for the first time as part of Eid celebrations in Dhahran, Saudi Arabia, June 16, 2018. Picture taken June 16, 2018. REUTERS/Hamad I Mohammed 

Russian's Deputy Prime Minister, Olga Golodets speaks to media during a news conference at King Abdulaziz Center for World Culture (ITHRA) ahead of Russian theatre orchestra The Marilinsky Orchestra held in Saudi for the first time as part of Eid celebrations in Dhahran, Saudi Arabia, June 16, 2018. Picture taken June 16, 2018. REUTERS/Hamad I Mohammed 

Saudi's Minister of Energy, Industry and Minerals Resources, Khalif Al Falih, (R) speaks to media as Russian's Deputy Prime Minister, Olga Golodets, (L) and Cheif Executive Officer of Russian Direct Investment Fund, Kirill Dmitriev (C) look on during a news conference at King Abdulaziz Center for World Culture (ITHRA) ahead of Russian theatre orchestra The Marilinsky Orchestra held in Saudi for the first time as part of Eid celebrations in Dhahran, Saudi Arabia, June 16, 2018. Picture taken June 16, 2018. REUTERS/Hamad I Mohammed 

A Saudi journalist takes photos of Russian's Deputy Prime Minister, Olga Golodets during a news conference at King Abdulaziz Center for World Culture (ITHRA) ahead of Russian theater orchestra The Marilinsky Orchestra held in Saudi for the first time as part of Eid celebrations in Dhahran, Saudi Arabia, June 16, 2018. Picture taken June 16, 2018. REUTERS/Hamad I Mohammed 

Saudi's Minister of Energy, Industry and Minerals Resources, Khalif Al Falih, (R) speaks to media as Russian's Deputy Prime Minister, Olga Golodets, (L) and Cheif Executive Officer of Russian Direct Investment Fund, Kirill Dmitriev (C) look on during a news conference at King Abdulaziz Center for World Culture (ITHRA) ahead of Russian theatre orchestra The Marilinsky Orchestra held in Saudi for the first time as part of Eid celebrations in Dhahran, Saudi Arabia, June 16, 2018. Picture taken June 16, 2018. REUTERS/Hamad I Mohammed 

Saudi's Minister of Energy, Industry and Minerals Resources, Khalif Al Falih speaks to media during a news conference at King Abdulaziz Center for World Culture (ITHRA) ahead of Russian theatre orchestra The Marilinsky Orchestra held in Saudi for the first time as part of Eid celebrations in Dhahran, Saudi Arabia, June 16, 2018. Picture taken June 16, 2018. REUTERS/Hamad I Mohammed 

Saudi Majdoleen Mohammed A. Alateeq is seen as she sits in her car which she received today in Riyadh, Saudi Arabia, June 16, 2018. REUTERS/Faisal Al Nasser 

Saudi Majdoleen Mohammed A. Alateeq is seen as she sits in her car which she received today in Riyadh, Saudi Arabia, June 16, 2018. REUTERS/Faisal Al Nasser 

Saudi Majdoleen Mohammed A. Alateeq checks her car which she received today in Riyadh, Saudi Arabia, June 16, 2018. REUTERS/Faisal Al Nasser 

Hanan Iskandar sits on a bike as she waits for her turn to practice riding a motorbike at Harley Davidson dealer in Al Khobar, Saudi Arabia, June 9, 2018. Picture taken June 9, 2018. REUTERS/Hamad I Mohammed 

Saudi Doaa Bassem gets ready for her advance motorcycle-riding training at Harley Davidson dealer in Al Khobar, Saudi Arabia, June 9, 2018. Picture taken June 9, 2018. REUTERS/Hamad I Mohammed 

Saudi Doaa Bassem (L) and Hanan Iskandar (R) give thumbs up as they sit on a motorbike prior to their advance riding session at Harley Davidson dealer in Al Khobar, Saudi Arabia, June 9, 2018. Picture taken June 9, 2018. REUTERS/Hamad I Mohammed 

Saudi Doaa Bassem gives thumbs up as she conducts her advance motorcycle-riding training at Harley Davidson dealer in Al Khobar, Saudi Arabia, June 9, 2018. Picture taken June 9, 2018. REUTERS/Hamad I Mohammed 

Saudi Doaa Bassem gets ready to sit on a motorbike for her advance motorcycle-riding training at Harley Davidson dealer in Al Khobar, Saudi Arabia, June 9, 2018. Picture taken June 9, 2018. REUTERS/Hamad I Mohammed 

Saudi Doaa Bassem rides a motorbike during her advance motorcycle-riding training at Harley Davidson dealer in Al Khobar, Saudi Arabia, June 9, 2018. Picture taken June 9, 2018. REUTERS/Hamad I Mohammed 

Hanan Iskandar rides a bike during her advance bike-riding training at Harley Davidson dealer in Al Khobar, Saudi Arabia, June 9, 2018. Picture taken June 9, 2018. REUTERS/Hamad I Mohammed 

Hanan Iskandar (R) rides a bike as she is assisted by her instructor during her advance bike-riding training at Harley Davidson dealer in Al Khobar, Saudi Arabia, June 9, 2018. Picture taken June 9, 2018. REUTERS/Hamad I Mohammed 

Hanan Iskandar rides a bike during her advance bike-riding training at Harley Davidson dealer in Al Khobar, Saudi Arabia, June 9, 2018. Picture taken June 9, 2018. REUTERS/Hamad I Mohammed 

Hanan Iskandar rides a bike during her advance bike-riding training at Harley Davidson dealer in Al Khobar, Saudi Arabia, June 9, 2018. Picture taken June 9, 2018. REUTERS/Hamad I Mohammed 

A child is seen playing with pigeons in the ground of Al-Quba mosque, after morning prayers during the holy month of Ramadan in Madina, Saudi Arabia May 21, 2018. Picture taken May 21, 2018. REUTERS/Hamad I Mohammed TPX IMAGES OF THE DAY 

Muslims make their way into Masjid Al-Nabawi for morning prayers during the holy month of Ramadan in Madina, Saudi Arabia May 20, 2018. Picture taken May 20, 2018. REUTERS/Hamad I Mohammed 

Muslims make their way into Masjid Al-Nabawi for morning prayers during the holy month of Ramadan in Madina, Saudi Arabia May 20, 2018. Picture taken May 20, 2018. REUTERS/Hamad I Mohammed 

Muslims make their way into Masjid Al-Nabawi for morning prayers during the holy month of Ramadan in Madina, Saudi Arabia May 20, 2018. Picture taken May 20, 2018. REUTERS/Hamad I Mohammed 

A child is seen playing with pigeons in the ground of Al-Quba mosque, after morning prayers during the holy month of Ramadan in Madina, Saudi Arabia May 21, 2018. Picture taken May 21, 2018. REUTERS/Hamad I Mohammed 

A man takes a bath in partly frozen Baltic sea in Gdynia, Poland March 3, 2018. REUTERS/Zuzanna Piekarska TPX IMAGES OF THE DAY 

A man takes a bath in partly frozen Baltic sea in Gdynia, Poland March 3, 2018. REUTERS/Zuzanna Piekarska 

A man sells pins with the image of Pope Francisco reading "I love Pope Francisco" in front of the Cathedral at Bolivar square in Bogota, Colombia September 4, 2017. REUTERS/Nacho Doce 

A worker uses a vacuum cleaner during the preparations ahead of the visit of Pope Francisco at Simon Bolivar park in Bogota, Colombia September 4, 2017. REUTERS/Nacho Doce 

A group dance a Colombian folklore during the preparations ahead visit of Pope Francisco at Simon Bolivar park in Bogota, Colombia September 4, 2017. REUTERS/Nacho Doce 

A police officer patrols between chairs where people will attend the mass of Pope Francisco at Simon Bolivar park in Bogota, Colombia September 4, 2017. REUTERS/Nacho Doce 

The moon is seen during a partial lunar eclipse is seen in the sky in Rawalpindi, Pakistan August 8, 2017. REUTERS/Faisal Mahmood 

A health technician analyses blood samples for tuberculosis testing in a high-tech tuberculosis lab in Carabayllo in Lima, Peru May 19, 2016. REUTERS/Mariana Bazo SEARCH "TB HOPE" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY 

A health agent walks before using guppy fish to consume larva of Zika-transmitting mosquito in a wasteland near a construction site of new residential buildings at Tijuca neighborhood in Rio de Janeiro, Brazil, February 17, 2016. Municipal health authorities in Rio de Janeiro are using a biological control in the form the guppy fish to try to control the proliferation of the mosquito carrying the Zika virus. The Poecilia reticulate, the fish's scientific name, feeds on mosquito larva, stemming the growth of the vector in pools of stagnant water. REUTERS/Sergio Moraes TPX IMAGES OF THE DAY

A banner is seen during an information campaign on Zika virus by the Chilean Health Ministry at the departures area of Santiago's international airport, Chile, January 28, 2016. The banner reads: "Zika virus, know before your trip. Use repellents on exposed areas. Use air conditioner or mosquito netting." REUTERS/Ivan Alvarado 

Chile's Health Minister Carmen Castillo (C) talks to the media during an information campaign on Zika virus by the Chilean Health Ministry at the departures area of Santiago's international airport, Chile January 28, 2016. The banner reads: "Zika virus, know before your trip". REUTERS/Ivan Alvarado