A potter makes earthenware oil lamps or "Diyo" used to decorate temples and homes ahead of Tihar festival, also called Diwali, the Hindu festival of lights, in Bhaktapur, Nepal October 20, 2019. REUTERS/Navesh Chitrakar

A potter makes earthenware oil lamp or "Diyo" used to decorate temples and homes ahead of Tihar festival, also called Diwali, the Hindu festival of lights, in Bhaktapur, Nepal October 20, 2019. REUTERS/Navesh Chitrakar

The hands of a man are pictured as he makes earthenware in Bhaktapur, Nepal, September 26, 2019. REUTERS/Monika Deupala

Palestinian fishermen repair their net at Al-Shati refugee camp in Gaza City September 16, 2019. Picture taken September 16, 2019. REUTERS/Mohammed Salem TPX IMAGES OF THE DAY

A windsurfer practices at Indian River ahead of the arrival of Hurricane Dorian in Titusville, U.S., September 3, 2019. REUTERS/Marco Bello

A Palestinian worker makes clay pots at a pottery workshop in Gaza City June 11, 2019. REUTERS/Mohammed Salem

Women knit during a Christmas workshop to teach embroidery in the northern Israeli city of Nazareth, December 6, 2018. Picture taken December 6, 2018. REUTERS/Ammar Awad

A woman takes a picture inside a Christmas tree at Comercio square in downtown Lisbon, Portugal November 27, 2018. REUTERS/Rafael Marchante TPX IMAGES OF THE DAY

A woman takes a picture inside a Christmas tree at Comercio square in downtown Lisbon, Portugal November 27, 2018. REUTERS/Rafael Marchante

A man makes earthen lamps which are used to decorate temples and homes during the Hindu festival of Diwali, at a workshop in Ahmedabad, India November 2, 2018. REUTERS/Amit Dave

A woman takes part in a knitting class for seniors in Ciudad Juarez, Mexico October 9, 2018. Picture taken October 9, 2018. REUTERS/Jose Luis Gonzalez

Used books are seen in the "Professor's stand", a street books vendor stand, in Rome, Italy September 14, 2018. REUTERS/Max Rossi

A man browses through books at a second-hand book market in Lima, Peru September 13, 2018. REUTERS/Mariana Bazo

A woman knits a rug as she takes part in "Beraginya" festival of folklore art in the town of Oktyabrski, Belarus, June 24, 2018. REUTERS/Vasily Fedosenko

Wood-cased coloured pencils are pictured in a shop at Faber-Castell manufacturer in Stein near Nuremberg, Germany January 16, 2018. Picture taken January 16, 2018. REUTERS/Michaela Rehle

A worktable is seen at the "Villa Imperial de Potosi" jeweller's workshop in La Paz, Bolivia January 16, 2018. Picture taken in January 16, 2018. REUTERS/David Mercado

A piece of silver is melted at the "Villa Imperial de Potosi" jewellery in La Paz, Bolivia January 16, 2018. Picture taken in January 16, 2018. REUTERS/David Mercado

A piece of silver is melted to make a ring in Soledad Borel's workshop in San Jose, Costa Rica, January 18, 2018. REUTERS/Juan Carlos Ulate

A piece of silver jewellery is seen during preparation in the workshop of goldsmith Gavriel Touboul in Jerusalem January 17, 2018. Picture taken January 17, 2018. REUTERS/Ronen Zvulun

Silver jewellery parts and work tools are seen in the workshop of goldsmith Gavriel Touboul in Jerusalem January 17, 2018. Picture taken January 17, 2018. REUTERS/Ronen Zvulun

A piece of silver jewellery is seen during preparation in the workshop of goldsmith Gavriel Touboul in Jerusalem January 17, 2018. Picture taken January 17, 2018. REUTERS/Ronen Zvulun

Pieces of used silver collected by goldsmith Gavriel Touboul is seen ahead of their melting into an ingot, in his workshop in Jerusalem January 17, 2018. Picture taken January 17, 2018. REUTERS/Ronen Zvulun

Silver plated cutlery is seen for sale at an antique store in Islamabad, Pakistan January 16, 2018. REUTERS/Caren Firouz

Silver plated teapots are seen for sale at an antique store in Islamabad, Pakistan January 16, 2018. REUTERS/Caren Firouz

A jeweller smoothens a gold medal at his workshop in central Madrid, Spain, December 15, 2017. REUTERS/Sergio Perez TPX IMAGES OF THE DAY

A worker applies colour to strings which will be used to fly kites, by a roadside in Ahmedabad, India, November 23, 2017. REUTERS/Amit Dave TPX IMAGES OF THE DAY

A goldsmith makes bracelets in Ahlatci Metal Refinery in the central Anatolian city of Corum, Turkey, May 11, 2017. Picture taken May 11, 2017. REUTERS/Umit Bektas TPX IMAGES OF THE DAY

People pass time at Genghis Square in central Ulaanbaatar, Mongolia, July 13, 2016. REUTERS/Damir Sagolj

People pass time at Genghis Square in central Ulaanbaatar, Mongolia, July 13, 2016. REUTERS/Damir Sagolj

White House floral designer Hedieh 'Roshan" Ghaffarian shows a towering display for the State Dinner welcoming Canadian Prime Minister Justin Trudeau and his wife Sophie Gregoire Trudeau during a press preview in the State Dining Room of the White House in Washington March 9, 2016. REUTERS/Gary Cameron

Place settings and floral arrangements for the State Dinner welcoming Canadian Prime Minister Justin Trudeau and his wife Sophie Gregoire Trudeau are seen during a press preview in the State Dining Room of the White House in Washington March 9, 2016. REUTERS/Gary Cameron

A bell ringer performs before an evening service as monks and priests remove snow in a compound of the Uspensky male monastery, during preparations for the Orthodox Christmas night service in the vicinity of the Siberian city of Krasnoyarsk, Russia, January 6, 2016. Most Orthodox Christians celebrate Christmas according to the Julian calendar on January 7, two weeks after most western Christian churches that abide by the Gregorian calendar. REUTERS/Ilya Naymushin

Britain's Chancellor of the Exchequer George Osborne hosts the annual Starlight Christmas Party at 11 Downing Street with Great British Bake off winner Nadiya Hussain (R) and Martha Hanlon (4), in London, December 15, 2015. REUTERS/Julian Simmonds/Pool

Britain's Catherine, Duchess of Cambridge takes part in group activities as she attends the Anna Freud Centre Family School Christmas Party at Anna Freud Centre, in London, December 15, 2015. REUTERS/Chris Jackson/Pool

Britain's Catherine, Duchess of Cambridge takes part in group activities as she attends the Anna Freud Centre Family School Christmas Party at Anna Freud Centre, in London, December 15, 2015. REUTERS/Chris Jackson/Pool

Britain's Catherine, Duchess of Cambridge takes part in group activities as she attends the Anna Freud Centre Family School Christmas Party at Anna Freud Centre, in London, December 15, 2015. REUTERS/Chris Jackson/Pool

Britain's Catherine, Duchess of Cambridge takes part in group activities as she attends the Anna Freud Centre Family School Christmas Party at Anna Freud Centre, in London, December 15, 2015. REUTERS/Chris Jackson/Pool

Britain's Catherine, Duchess of Cambridge takes part in group activities as she attends the Anna Freud Centre Family School Christmas Party at Anna Freud Centre, in London, December 15, 2015. REUTERS/Chris Jackson/Pool

Britain's Catherine, Duchess of Cambridge takes part in group activities as she attends the Anna Freud Centre Family School Christmas Party at Anna Freud Centre, in London, December 15, 2015. REUTERS/Chris Jackson/Pool

Britain's Catherine, Duchess of Cambridge takes part in group activities as she attends the Anna Freud Centre Family School Christmas Party at Anna Freud Centre, in London, December 15, 2015. REUTERS/Chris Jackson/Pool

Britain's Catherine, Duchess of Cambridge takes part in group activities as she attends the Anna Freud Centre Family School Christmas Party at Anna Freud Centre, in London, December 15, 2015. REUTERS/Chris Jackson/Pool

Britain's Catherine, Duchess of Cambridge takes part in group activities as she attends the Anna Freud Centre Family School Christmas Party at Anna Freud Centre, in London, December 15, 2015. REUTERS/Chris Jackson/Pool

The word "Hosiery" remains on the wall of a shut-down knitting facility in Fort Payne, Alabama October 22, 2015. Most of the manufacturers are now closed in Fort Payne, which was once called the "Sock Capital of the World." REUTERS/Brian Snyder

Gary Hulslander re-threads an automatic sock knitting machine at Shankel's Hosiery in Fort Payne, Alabama October 22, 2015. Shankel's is one of the few remaining producers of socks in Fort Payne, which was once known as the "Sock Capital of the World." Owner Alan Shankel says "We haven't made money in 7 years, we just break even." REUTERS/Brian Snyder

Gary Hulslander walks between automatic sock knitting machines at Shankel's Hosiery manufacturing facility in Fort Payne, Alabama October 22, 2015. Shankel's is one of the few remaining producers of socks in Fort Payne, which was once known by some as the "Sock Capital of the World." Owner Alan Shankel says "We haven’t made money in seven years, we just break even." REUTERS/Brian Snyder PICTURE 16 OF 28 FOR WIDER IMAGE STORY "THE LEGACY OF 'KING COTTON' IN THE AMERICAN SOUTH" SEARCH "KING COTTON" FOR ALL IMAGES

Birds perch on the head of Abdulrahman al-Sebai, who keeps more than 500 birds as a hobby, at his farm in the central Saudi province of Qassim September 2, 2015. REUTERS/Faisal Al Nasser

Birds sit on the palm of Abdulrahman al-Sebai, who keeps more than 500 birds as a hobby, at his farm in the central Saudi province of Qassim September 2, 2015. REUTERS/Faisal Al Nasser

Birds perch on the head of Abdulrahman al-Sebai, who keeps more than 500 birds as a hobby, at his farm in the central Saudi province of Qassim September 2, 2015. REUTERS/Faisal Al Nasser

Birds perch on the head of Abdulrahman al-Sebai, who keeps more than 500 birds as a hobby, at his farm in the central Saudi province of Qassim September 2, 2015. REUTERS/Faisal Al Nasser

A visitor poses for a picture at a flower exhibition in Kiev, Ukraine, August 21, 2015. REUTERS/Gleb Garanich

A visitor looks on at a flower exhibition in Kiev, Ukraine, August 21, 2015. REUTERS/Gleb Garanich

A visitor poses for a picture at a flower exhibition in Kiev, Ukraine, August 21, 2015. REUTERS/Gleb Garanich

Visitors take a picture at a flower exhibition in Kiev, Ukraine, August 21, 2015. REUTERS/Gleb Garanich

A woman looks at flower arrangements at the Yasukuni Shrine in Tokyo August 14, 2015, as the shrine prepares for Saturday's 70th anniversary of Japan's surrender in World War Two. Japanese Prime Minister Shinzo Abe was poised on Friday to issue a statement marking the 70th anniversary of the end of World War Two, remarks that will be closely analysed abroad to see whether he dilutes past apologies over the conflict. REUTERS/Thomas Peter

Clinton Foundation Vice Chair Chelsea Clinton talks during a conversation to Haitians artisans at the Caribbean Craft facilities in Port-au-Prince, July 28, 2015. Chelsea Clinton is in Haiti for two days visiting Clinton's Foundation and other health facilities in Port-au-Prince. REUTERS/Andres Martinez Casares

Clinton Foundation Vice Chair Chelsea Clinton (C) visits Haitians artisans at the Caribbean Craft facilities in Port-au-Prince, July 28, 2015. Chelsea Clinton is in Haiti for two days visiting Clinton's Foundation and other health facilities in Port-au-Prince. REUTERS/Andres Martinez Casares

Clinton Foundation Vice Chair Chelsea Clinton (C) visits Haitians artisans at the Caribbean Craft facilities in Port-au-Prince, July 28, 2015. Chelsea Clinton is in Haiti for two days visiting Clinton's Foundation and other health facilities in Port-au-Prince. REUTERS/Andres Martinez Casares

Clinton Foundation Vice Chair Chelsea Clinton (C) visits Haitians artisans at the Caribbean Craft facilities in Port-au-Prince, July 28, 2015. Chelsea Clinton is in Haiti for two days visiting Clinton's Foundation and other health facilities in Port-au-Prince. REUTERS/Andres Martinez Casares

Clinton Foundation Vice Chair Chelsea Clinton (R) visits Haitians artisans at the Caribbean Craft facilities in Port-au-Prince, July 28, 2015. Chelsea Clinton is in Haiti for two days visiting Clinton's Foundation and other health facilities in Port-au-Prince. REUTERS/Andres Martinez Casares