Handwritten messages can be seen at a memorial for George Floyd that has been created at the place where he was taken into police custody and later died in Minneapolis, Minnesota, U.S., June 1, 2020. REUTERS/Leah Millis

A handwritten note is seen on a customer's door during the morning milk delivery round in the town of Sawbridgeworth, as business for the 'Mr Milk' milkman company booms, as the spread of the coronavirus disease (COVID-19) continues in Hertfordshire, Britain, April 22, 2020. Picture taken April 22, 2020. REUTERS/Hannah McKay

A handwritten sign designating oxygen tanks to be used for patients with coronavirus disease (COVID-19) is seen at San Felipe Hospital, in Tegucigalpa, Honduras April 1, 2020. REUTERS/Jorge Cabrera

Handwritten notes are seen on U.S. President Donald Trump's statement as he speaks during a news conference, amid the coronavirus disease (COVID-19) outbreak, in Washington D.C., U.S., March 22, 2020. REUTERS/Yuri Gripas

A small handwritten sign sits outside Life Care Center of Kirkland, a long-term care facility linked to several confirmed coronavirus cases, in Kirkland, Washington, U.S. March 13, 2020. REUTERS/Lindsey Wasson

A woman holds a handwritten sign after knocking on her mother’s window to get her attention before visiting at the Life Care Center of Kirkland, the long-term care facility linked to several confirmed coronavirus cases in the state, in Kirkland, Washington, U.S. March 2, 2020. REUTERS/David Ryder TPX IMAGES OF THE DAY

A woman holds a handwritten sign after knocking on her mother’s window to get her attention before visiting at the Life Care Center of Kirkland, the long-term care facility linked to several confirmed coronavirus cases in the state, in Kirkland, Washington, U.S. March 2, 2020. REUTERS/David Ryder

Residents wearing face masks walk next to a handwritten propaganda banner against the novel coronavirus in a hutong, following its outbreak in the country, in Beijing, China February 11, 2020. The Chinese characters on the banner read, "Prevention and control against the epidemic lies in everyone's responsibility". Picture taken February 11, 2020. REUTERS/Tingshu Wang

Tennis - Australian Open - Quarter Final - Melbourne Park, Melbourne, Australia - January 28, 2020. A note, handwritten by Serbia's Novak Djokovic in memory of Kobe Bryant, lays on the court after his match against Canada's Milos Raonic. REUTERS/Hannah Mckay

Democratic 2020 U.S. presidential candidate and former U.S. Vice President Joe Biden holds a card with handwritten notes of poll numbers during a visit to his south side campaign office in Des Moines, Iowa, U.S., January 13, 2020. REUTERS/Brian Snyder

Helen Julian, a volunteer from the Old Weather group, poses for a photograph at her laptop in Darlington, Britain, December 6, 2019. A group of far-flung volunteers called Old Weather is painstakingly extracting data from the handwritten logbooks of 19th-century ships to help us understand how the Earth's climate is changing. Founded a decade ago, Old Weather's volunteers have accumulated an astonishing 4 million observations of weather and ice, taken mostly from the logbooks of ships plying northern or Arctic routes. Picture taken December 6, 2019. To match Special Report CLIMATE-CHANGE/ICE-SHIPLOGS. REUTERS/Lee Smith

Old Weather volunteer Joan Arthur poses for a photograph at her home in Oxford, Britain, November 25, 2019. A group of far-flung volunteers called Old Weather is painstakingly extracting data from the handwritten logbooks of 19th-century ships to help us understand how the Earth's climate is changing. Founded a decade ago, Old Weather's volunteers have accumulated an astonishing 4 million observations of weather and ice, taken mostly from the logbooks of ships plying northern or Arctic routes. Picture taken November 25, 2019. To match Special Report CLIMATE-CHANGE/ICE-SHIPLOGS REUTERS/Eddie Keogh

Helen Julian, a volunteer from the Old Weather group, poses for a photograph in Darlington, Britain, December 6, 2019. A group of far-flung volunteers called Old Weather is painstakingly extracting data from the handwritten logbooks of 19th-century ships to help us understand how the Earth's climate is changing. Founded a decade ago, Old Weather's volunteers have accumulated an astonishing 4 million observations of weather and ice, taken mostly from the logbooks of ships plying northern or Arctic routes. Picture taken December 6, 2019. To match Special Report CLIMATE-CHANGE/ICE-SHIPLOGS. REUTERS/Lee Smith

Helen Julian, a volunteer from the Old Weather group, poses for a photograph in Darlington, Britain, December 6, 2019. A group of far-flung volunteers called Old Weather is painstakingly extracting data from the handwritten logbooks of 19th-century ships to help us understand how the Earth's climate is changing. Founded a decade ago, Old Weather's volunteers have accumulated an astonishing 4 million observations of weather and ice, taken mostly from the logbooks of ships plying northern or Arctic routes. Picture taken December 6, 2019. To match Special Report CLIMATE-CHANGE/ICE-SHIPLOGS. REUTERS/Lee Smith

Old Weather group volunteer Michael Purves poses for a photograph at Clover Point Park in Victoria, British Columbia, Canada, November 13, 2019. A group of far-flung volunteers called Old Weather is painstakingly extracting data from the handwritten logbooks of 19th-century ships to help us understand how the Earth's climate is changing. Founded a decade ago, Old Weather's volunteers have accumulated an astonishing 4 million observations of weather and ice, taken mostly from the logbooks of ships plying northern or Arctic routes. Picture taken November 13, 2019. To match Special Report CLIMATE-CHANGE/ICE-SHIPLOGS. REUTERS/Kevin Light

Old Weather group volunteer Michael Purves poses for a photograph at his laptop in his home office in Victoria, British Columbia, Canada, November 13, 2019. A group of far-flung volunteers called Old Weather is painstakingly extracting data from the handwritten logbooks of 19th-century ships to help us understand how the Earth's climate is changing. Founded a decade ago, Old Weather's volunteers have accumulated an astonishing 4 million observations of weather and ice, taken mostly from the logbooks of ships plying northern or Arctic routes. Picture taken November 13, 2019. To match Special Report CLIMATE-CHANGE/ICE-SHIPLOGS REUTERS/Kevin Light

Helen Julian, a volunteer from the Old Weather group, poses for a photograph in Darlington, Britain, December 6, 2019. A group of far-flung volunteers called Old Weather is painstakingly extracting data from the handwritten logbooks of 19th-century ships to help us understand how the Earth's climate is changing. Founded a decade ago, Old Weather's volunteers have accumulated an astonishing 4 million observations of weather and ice, taken mostly from the logbooks of ships plying northern or Arctic routes. Picture taken December 6, 2019. To match Special Report CLIMATE-CHANGE/ICE-SHIPLOGS. REUTERS/Lee Smith

Helen Julian, a volunteer from the Old Weather group, poses for a photograph in Darlington, Britain, December 6, 2019. A group of far-flung volunteers called Old Weather is painstakingly extracting data from the handwritten logbooks of 19th-century ships to help us understand how the Earth's climate is changing. Founded a decade ago, Old Weather's volunteers have accumulated an astonishing 4 million observations of weather and ice, taken mostly from the logbooks of ships plying northern or Arctic routes. Picture taken December 6, 2019. To match Special Report CLIMATE-CHANGE/ICE-SHIPLOGS. REUTERS/Lee Smith

Old Weather group volunteer Michael Purves poses for a photograph at Clover Point Park in Victoria, British Columbia, Canada, November 13, 2019. A group of far-flung volunteers called Old Weather is painstakingly extracting data from the handwritten logbooks of 19th-century ships to help us understand how the Earth's climate is changing. Founded a decade ago, Old Weather's volunteers have accumulated an astonishing 4 million observations of weather and ice, taken mostly from the logbooks of ships plying northern or Arctic routes. Picture taken November 13, 2019. To match Special Report CLIMATE-CHANGE/ICE-SHIPLOGS REUTERS/Kevin Light

Old Weather group volunteer Michael Purves poses for a photograph at Clover Point Park in Victoria, British Columbia, Canada, November 13, 2019. A group of far-flung volunteers called Old Weather is painstakingly extracting data from the handwritten logbooks of 19th-century ships to help us understand how the Earth's climate is changing. Founded a decade ago, Old Weather's volunteers have accumulated an astonishing 4 million observations of weather and ice, taken mostly from the logbooks of ships plying northern or Arctic routes. Picture taken November 13, 2019. To match Special Report CLIMATE-CHANGE/ICE-SHIPLOGS REUTERS/Kevin Light

Old Weather group volunteer Michael Purves poses for a photograph at Clover Point Park in Victoria, British Columbia, Canada, November 13, 2019. A group of far-flung volunteers called Old Weather is painstakingly extracting data from the handwritten logbooks of 19th-century ships to help us understand how the Earth's climate is changing. Founded a decade ago, Old Weather's volunteers have accumulated an astonishing 4 million observations of weather and ice, taken mostly from the logbooks of ships plying northern or Arctic routes. Picture taken November 13, 2019. To match Special Report CLIMATE-CHANGE/ICE-SHIPLOGS REUTERS/Kevin Light

Old Weather group volunteer Michael Purves poses for a photograph at Clover Point Park in Victoria, British Columbia, Canada, November 13, 2019. A group of far-flung volunteers called Old Weather is painstakingly extracting data from the handwritten logbooks of 19th-century ships to help us understand how the Earth's climate is changing. Founded a decade ago, Old Weather's volunteers have accumulated an astonishing 4 million observations of weather and ice, taken mostly from the logbooks of ships plying northern or Arctic routes. Picture taken November 13, 2019. To match Special Report CLIMATE-CHANGE/ICE-SHIPLOGS REUTERS/Kevin Light

Old Weather group volunteer Michael Purves poses for a photograph at Clover Point Park in Victoria, British Columbia, Canada, November 13, 2019. A group of far-flung volunteers called Old Weather is painstakingly extracting data from the handwritten logbooks of 19th-century ships to help us understand how the Earth's climate is changing. Founded a decade ago, Old Weather's volunteers have accumulated an astonishing 4 million observations of weather and ice, taken mostly from the logbooks of ships plying northern or Arctic routes. Picture taken November 13, 2019. To match Special Report CLIMATE-CHANGE/ICE-SHIPLOGS. REUTERS/Kevin Light

Old Weather group volunteer Michael Purves poses for a photograph in his home office in Victoria, British Columbia, Canada, November 13, 2019. A group of far-flung volunteers called Old Weather is painstakingly extracting data from the handwritten logbooks of 19th-century ships to help us understand how the Earth's climate is changing. Founded a decade ago, Old Weather's volunteers have accumulated an astonishing 4 million observations of weather and ice, taken mostly from the logbooks of ships plying northern or Arctic routes. Picture taken November 13, 2019. To match Special Report CLIMATE-CHANGE/ICE-SHIPLOGS. REUTERS/Kevin Light

Old Weather group volunteer Michael Purves poses for a photograph on his front porch Victoria, British Columbia, Canada, November 13, 2019. A group of far-flung volunteers called Old Weather is painstakingly extracting data from the handwritten logbooks of 19th-century ships to help us understand how the Earth's climate is changing. Founded a decade ago, Old Weather's volunteers have accumulated an astonishing 4 million observations of weather and ice, taken mostly from the logbooks of ships plying northern or Arctic routes. Picture taken November 13, 2019. To match Special Report CLIMATE-CHANGE/ICE-SHIPLOGS. REUTERS/Kevin Light

Old Weather group volunteer Michael Purves poses for a photograph on his front porch in Victoria, British Columbia, Canada, November 13, 2019. A group of far-flung volunteers called Old Weather is painstakingly extracting data from the handwritten logbooks of 19th-century ships to help us understand how the Earth's climate is changing. Founded a decade ago, Old Weather's volunteers have accumulated an astonishing 4 million observations of weather and ice, taken mostly from the logbooks of ships plying northern or Arctic routes. Picture taken November 13, 2019. To match Special Report CLIMATE-CHANGE/ICE-SHIPLOGS. REUTERS/Kevin Light

Old Weather group volunteer Michael Purves poses for a photograph looking over the Pacific Ocean from the Dallas Road Waterfront Trail in Victoria, British Columbia, Canada, November 13, 2019. A group of far-flung volunteers called Old Weather is painstakingly extracting data from the handwritten logbooks of 19th-century ships to help us understand how the Earth's climate is changing. Founded a decade ago, Old Weather's volunteers have accumulated an astonishing 4 million observations of weather and ice, taken mostly from the logbooks of ships plying northern or Arctic routes. Picture taken November 13, 2019. To match Special Report CLIMATE-CHANGE/ICE-SHIPLOGS REUTERS/Kevin Light

Old Weather group volunteer Michael Purves poses for a photograph at Clover Point Park in Victoria, British Columbia, Canada, November 13, 2019. A group of far-flung volunteers called Old Weather is painstakingly extracting data from the handwritten logbooks of 19th-century ships to help us understand how the Earth's climate is changing. Founded a decade ago, Old Weather's volunteers have accumulated an astonishing 4 million observations of weather and ice, taken mostly from the logbooks of ships plying northern or Arctic routes. Picture taken November 13, 2019. To match Special Report CLIMATE-CHANGE/ICE-SHIPLOGS REUTERS/Kevin Light

A handwritten note about prioritising medical treatment is seen on Carrie Lam's prepared remarks as she addresses the media about government action on the recent Polytechnic University (PolyU) standoff during a weekly news briefing after local elections in Hong Kong, China, November 26, 2019. REUTERS/Leah Millis

U.S. President Donald Trump holds what appears to be a prepared statement and handwritten notes after watching testimony by U.S. Ambassador to the European Union Gordon Sondland as he speaks to reporters prior to departing for travel to Austin, Texas from the South Lawn of the White House in Washington, U.S., November 20, 2019. REUTERS/Erin Scott

U.S. President Donald Trump holds what appears to be a prepared statement and handwritten notes after watching testimony by U.S. Ambassador to the European Union Gordon Sondland as he speaks to reporters while departing for travel to Austin, Texas from the South Lawn of the White House in Washington, U.S., November 20, 2019. REUTERS/Erin Scott

U.S. President Donald Trump holds what appears to be a prepared statement and handwritten notes after watching testimony by U.S. Ambassador to the European Union Gordon Sondland as he speaks to reporters while departing for travel to Austin, Texas from the South Lawn of the White House in Washington, U.S., November 20, 2019. REUTERS/Erin Scott

U.S. President Donald Trump holds what appears to be a prepared statement and handwritten notes after watching testimony by U.S. Ambassador to the European Union Gordon Sondland as he speaks to reporters while departing for travel to Austin, Texas from the South Lawn of the White House in Washington, U.S., November 20, 2019. REUTERS/Erin Scott

U.S. President Donald Trump holds what appears to be a prepared statement and handwritten notes after watching testimony by U.S. Ambassador to the European Union Gordon Sondland as he speaks to reporters while departing for travel to Austin, Texas from the South Lawn of the White House in Washington, U.S., November 20, 2019. REUTERS/Erin Scott

U.S. President Donald Trump holds what appears to be a prepared statement and handwritten notes after watching testimony by U.S. Ambassador to the European Union Gordon Sondland as he speaks to reporters while departing for travel to Austin, Texas from the South Lawn of the White House in Washington, U.S., November 20, 2019. REUTERS/Erin Scott

U.S. President Donald Trump holds what appears to be a prepared statement and handwritten notes after watching testimony by U.S. Ambassador to the European Union Gordon Sondland as he speaks to reporters while departing for travel to Austin, Texas from the South Lawn of the White House in Washington, U.S., November 20, 2019. REUTERS/Erin Scott

U.S. President Donald Trump holds what appears to be a prepared statement and handwritten notes after watching testimony by U.S. Ambassador to the European Union Gordon Sondland as he speaks to reporters while departing for travel to Austin, Texas from the South Lawn of the White House in Washington, U.S., November 20, 2019. REUTERS/Erin Scott

U.S. President Donald Trump holds what appears to be a prepared statement and handwritten notes after watching testimony by U.S. Ambassador to the European Union Gordon Sondland as he speaks to reporters prior to departing for travel to Austin, Texas from the South Lawn of the White House in Washington, U.S., November 20, 2019. REUTERS/Erin Scott TPX IMAGES OF THE DAY

U.S. President Donald Trump holds what appears to be a prepared statement and handwritten notes after watching testimony by U.S. Ambassador to the European Union Gordon Sondland at House Intelligence Committee impeachment hearings, as he speaks to reporters prior to departing for travel to Austin, Texas from the South Lawn of the White House in Washington, U.S., November 20, 2019. REUTERS/Erin Scott

U.S. President Donald Trump holds what appears to be a prepared statement and handwritten notes after watching testimony by U.S. Ambassador to the European Union Gordon Sondland as he speaks to reporters prior to departing for travel to Austin, Texas from the South Lawn of the White House in Washington, U.S., November 20, 2019. REUTERS/Erin Scott

Handwritten letters from Pope Francis are displayed by Sister Ana Rosa Sivori at the St. Mary School in Udon Thani province, Thailand, September 24, 2019. Picture taken September 24, 2019. REUTERS/Jiraporn Kuhakan

Handwritten advertisements for rooms to let are placed inside the window of a newsagents on Streatham High Road in south London, Britain, October 16, 2019. REUTERS/Hannah McKay SEARCH "STREATHAM BREXIT" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Rep. Jim Jordan (R-OH) displays a list of handwritten notes ahead of the testimony of Anne Schuchat, principal deputy secretary of the Centers for Disease Control and Prevention, during a House Oversight and Reform Economic and Consumer Policy Subcommittee hearing on "Examining the Outbreak of Lung Disease and CDC's Urgent Warning Not to Use E-Cigarettes" in Washington, U.S., September 24, 2019. REUTERS/Tom Brenner

A handwritten note is seen on the hand of Brazil's President Jair Bolsonaro during a ceremony to launch the program 'Doctors in Brazil' at the Planalto Palace in Brasilia, Brazil August 1, 2019. A note reads: 'God, Family, Brazil.' REUTERS/Adriano Machado

Handwritten notes from supporters cover the wall outside U.S. Rep Alexandria Ocasio-Cortez's (D-NY) office in Washington, U.S., July 26, 2019. REUTERS/Erin Scott

A handwritten sign reading "Hillary for Jail" hangs on a partially constructed home on the outskirts of the Northampton County city of Easton, Pennsylvania, U.S., April 29, 2019. REUTERS/Brian Snyder SEARCH "ELECTION DECIDERS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

U.S. President Donald Trump carries his own handwritten notes as he walks out of the Oval Office to speak to reporters about the investigations into himself and his administration by Special Counsel Robert Mueller and congressional Democrats in the Rose Garden at the White House in Washington, U.S., May 22, 2019. Picture taken May 22, 2019. REUTERS/Leah Millis

U.S. President Donald Trump carries his own handwritten notes as he walks out of the Oval Office to speak to reporters about the investigations into himself and his administration by Special Counsel Robert Mueller and congressional Democrats in the Rose Garden at the White House in Washington, U.S., May 22, 2019. Picture taken May 22, 2019. REUTERS/Leah Millis

Drawing are pictured at the Extinction Rebellion protest site at the Marble Arch in London, Britain April 24, 2019. REUTERS/Toby Melville

A handwritten message and flowers from Sara Canning, partner of 29-year-old journalist Lyra McKee who was shot dead, are left at the exact spot where she was slain in Londonderry, Northern Ireland April 20, 2019. REUTERS/Clodagh Kilcoyne

A handwritten message is seen on a piece of fruit in a food parcel prepared by Meghan, Duchess of Sussex to go in the charity outreach van, during a visit to One25 in Bristol, Britain, February 1, 2019. REUTERS/Toby Melville/Pool

A handwritten sign is seen on a telephone poll on the road to Paradise in Chico, California, U.S. November 21, 2018. REUTERS/Elijah Nouvelage

A handwritten page is seen from a copy of the 1965 PhD thesis by the British theoretical physicist Stephen Hawking ahead of an auction of items from his personal estate at Christie's in London, Britain October 30, 2018. REUTERS/Toby Melville

U.S. Ambassador to the United Nations Nikki Haley points at her handwritten notes for U.S. President Donald Trump as he chairs a UN Security Council meeting during the 73rd session of the United Nations General Assembly at U.N. headquarters in New York, U.S., September 26, 2018. REUTERS/Carlos Barria

U.S. Ambassador to the United Nations Nikki Haley shows White House Chief of Staff John Kelly and Secretary of State Mike Pompeo papers and a handwritten note reading: "After you thank the Prime Minister of the Netherlands, you can depart. I will take the chair. You don't need to say anything further" that she had just showed to U.S. President Donald Trump as he chaired a UN Security Council meeting during the 73rd session of the United Nations General Assembly at U.N. headquarters in New York, U.S., September 26, 2018. REUTERS/Carlos Barria

U.S. Ambassador to the United Nations Nikki Haley shows White House Chief of Staff John Kelly and Secretary of State Mike Pompeo papers and a handwritten note reading: "After you thank the Prime Minister of the Netherlands, you can depart. I will take the chair. You don't need to say anything further" that she had just showed U.S. President Donald Trump as he chaired a UN Security Council meeting during the 73rd session of the United Nations General Assembly at U.N. headquarters in New York, U.S., September 26, 2018. REUTERS/Carlos Barria

A printer is marked with handwritten sign reading “DO NOT USE!!” in the parliament in Oslo, Norway September 24 2018, following the arrest of a Russian citizen suspected of espionage. REUTERS/Nerijus Adomaitis

A sign is pictured as Hurricane Florence comes ashore on Wilmington, North Carolina, U.S., September 14, 2018. REUTERS/Carlo Allegri

Handwritten notes are seen on the hand of presidential candidate Jair Bolsonaro of the Party for Socialism and Liberation (PSL) during a television debate at the Rede TV studio in Osasco, Brazil August 17, 2018. The sign reads, "Research, Weapons and Lula." REUTERS/Paulo Whitaker

Handwritten notes are seen on the hand of presidential candidate Jair Bolsonaro of the Party for Socialism and Liberation (PSL) during a television debate at the Rede TV studio in Osasco, Brazil August 17, 2018. REUTERS/Paulo Whitaker