A demonstrator puts a material on fire during a protest following Tuesday's blast, in Beirut, Lebanon August 9, 2020. REUTERS/Hannah McKay

A poster with coronavirus relief materials that have been provided to Arizona is displayed as President Donald Trump meets with Arizona Gov. Doug Ducey, in the Oval Office of the White House in Washington, Wednesday, Aug. 5, 2020. Andrew Harnik/Pool via REUTERS

U.S. President Donald Trump gestures to a poster with coronavirus disease (COVID-19) relief materials that have been provided to Arizona, as he meets with Arizona Governor Doug Ducey in the Oval Office of the White House in Washington, DC, U.S., August 5, 2020. Andrew Harnik/Pool via REUTERS

U.S. President Donald Trump gestures to a poster with coronavirus disease (COVID-19) relief materials that have been provided to Arizona, as he meets with Arizona Governor Doug Ducey in the Oval Office of the White House in Washington, DC, U.S., August 5, 2020. Andrew Harnik/Pool via REUTERS

Dr. Benjamin Tee, Assistant Professor of Materials Science and Engineering at the National University of Singapore (NUS), demonstrates how his device can detect the texture of a squishy stress ball at a lab in NUS, Singapore July 27, 2020. Picture taken July 27, 2020. REUTERS/Joseph Campbell

Dr. Benjamin Tee, Assistant Professor of Materials Science and Engineering at the National University of Singapore (NUS), sits for an interview at a lab in NUS, Singapore July 27, 2020. REUTERS/Joseph Campbell

Dr. Benjamin Tee, Assistant Professor of Materials Science and Engineering at the National University of Singapore (NUS), demonstrates how his device can detect the texture of a solid plastic ball at a lab in NUS, Singapore July 27, 2020.Picture taken July 27, 2020. REUTERS/Joseph Campbell

Dr. Benjamin Tee, Assistant Professor of Materials Science and Engineering at the National University of Singapore (NUS), demonstrates how his device can detect the texture of a soft stress ball at a lab in NUS, Singapore July 27, 2020. Picture taken July 27, 2020. REUTERS/Joseph Campbell

Dr. Benjamin Tee, Assistant Professor of Materials Science and Engineering at the National University of Singapore (NUS), prepares to demonstrate how his device can detect the texture of a soft stress ball at a lab in NUS, Singapore July 27, 2020. Picture taken July 27, 2020. REUTERS/Joseph Campbell

A light emitting skin developed by Dr. Benjamin Tee, Assistant Professor of Materials Science and Engineering at the National University of Singapore (NUS), and his team is displayed at a lab in NUS, Singapore July 27, 2020. Picture taken July 27, 2020. REUTERS/Joseph Campbell

A member of security personnel stands guard in front of the former U.S. Consulate General with the signage and plaques covered with gray material in Chengdu, Sichuan province, China, July 27, 2020, after China ordered its closure in response to U.S. order for China to shut its consulate in Houston. REUTERS/Thomas Peter

A member of security personnel stands guard in front of the former U.S. Consulate General with the signage and plaques covered with gray material in Chengdu, Sichuan province, China, July 27, 2020, after China ordered its closure in response to U.S. order for China to shut its consulate in Houston. REUTERS/Thomas Peter

A street booth providing Falun Gong promotional materials is seen at the Tsim Sha Tsui Star Ferry terminal in Hong Kong, China, July 5, 2020. Picture taken July 5, 2020. REUTERS/Pak Yiu u000d u000d

A health worker dressed in a protective suit carries bags of bio hazard materials from a field hospital builtÊon a soccer stadium in Machakos, as the number of confirmed coronavirus disease (COVID-19) cases continues to rise in Kenya, July 23, 2020. Picture taken July 23, 2020. REUTERS/Baz Ratner

Mansoor Khan, 44, a waste collector, walks as he carries a sack of recyclable material after finishing work for the day at a landfill site, during the coronavirus disease (COVID-19) outbreak, in New Delhi, India, July 9, 2020. REUTERS/Adnan Abidi SEARCH "COVID-19 MEDICAL WASTE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Waste collectors look for recyclable materials at a landfill site, during the coronavirus disease (COVID-19) outbreak, in New Delhi, India, July 9, 2020. REUTERS/Adnan Abidi SEARCH "COVID-19 MEDICAL WASTE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Mansoor Khan, 44, who works as a waste collector, puts on his shoes as he gets ready to look for recyclable materials from a landfill site next to his house, during the coronavirus disease (COVID-19) outbreak, in New Delhi, India, July 16, 2020. REUTERS/Adnan Abidi SEARCH "COVID-19 MEDICAL WASTE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Waste collectors look for recyclable materials at a landfill site, during the coronavirus disease (COVID-19) outbreak, in New Delhi, India, July 22, 2020. REUTERS/Adnan Abidi SEARCH "COVID-19 MEDICAL WASTE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Waste collectors look for recyclable materials near bags of disposed medical waste at a landfill site, during the coronavirus disease (COVID-19) outbreak, in New Delhi, India, July 9, 2020. REUTERS/Adnan Abidi SEARCH "COVID-19 MEDICAL WASTE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Waste collectors look for recyclable materials among bags of disposed medical waste at a landfill site, during the coronavirus disease (COVID-19) outbreak, in New Delhi, India, July 9, 2020. REUTERS/Adnan Abidi SEARCH "COVID-19 MEDICAL WASTE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY

Latifa Bibi, 38, who is married to Mansoor Khan, a waste collector, looks for recyclable materials at a landfill site, during the coronavirus disease (COVID-19) outbreak, in New Delhi, India, July 16, 2020. "When I return from there, I feel afraid to enter my house because I have children at home. We are really afraid of this disease," said Bibi. REUTERS/Adnan Abidi SEARCH "COVID-19 MEDICAL WASTE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Mansoor Khan, 44, a waste collector, goes through bags of rubbish containing personal protective equipment (PPE) suits, as he looks for recyclable materials at a landfill site, during the coronavirus disease (COVID-19) outbreak, in New Delhi, India, July 9, 2020. "What if we die? What if we get this disease? But fear will not fill our bellies, that is why we have to do this work," said Khan. REUTERS/Adnan Abidi SEARCH "COVID-19 MEDICAL WASTE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Mansoor Khan, 44, a waste collector, carries a sack of recyclable materials that he found at a landfill site, during the coronavirus disease (COVID-19) outbreak, in New Delhi, India, July 22, 2020. REUTERS/Adnan Abidi SEARCH "COVID-19 MEDICAL WASTE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Latifa Bibi, 38, helps her husband Mansoor Khan, 44, a waste collector, carrying a sack of recyclable materials that they found at a landfill site, after finishing work for the day, during the coronavirus disease (COVID-19) outbreak, in New Delhi, India, July 9, 2020. REUTERS/Adnan Abidi SEARCH "COVID-19 MEDICAL WASTE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Mansoor Khan, 44, a waste collector, looks for recyclable materials at a landfill site, during the coronavirus disease (COVID-19) outbreak, in New Delhi, India, July 9, 2020. REUTERS/Adnan Abidi SEARCH "COVID-19 MEDICAL WASTE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A waste collector, carries a sack of recyclable materials, after he finishes work for the day at a landfill site, during the coronavirus disease (COVID-19) outbreak, in New Delhi, India, July 15, 2020. REUTERS/Adnan Abidi SEARCH "COVID-19 MEDICAL WASTE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A face mask is seen at a mask stall at a procurement fair for epidemic-prevention materials in Shanghai following the coronavirus disease (COVID-19) outbreak, China July 22, 2020. REUTERS/Aly Song

Two face masks are seen at a mask stall at a procurement fair for epidemic-prevention materials in Shanghai following the coronavirus disease (COVID-19) outbreak, China July 22, 2020. REUTERS/Aly Song

People wearing face masks are seen at a mask stall at a procurement fair for epidemic-prevention materials in Shanghai following the coronavirus disease (COVID-19) outbreak, China July 22, 2020. REUTERS/Aly Song

A man carries melt blown filter cloths at a procurement fair for epidemic-prevention materials in Shanghai following the coronavirus disease (COVID-19) outbreak, China July 22, 2020. REUTERS/Aly Song

People wearing face masks visit a mask stall at a procurement fair for epidemic-prevention materials in Shanghai following the coronavirus disease (COVID-19) outbreak, China July 22, 2020. REUTERS/Aly Song

A man wearing a face mask is seen at a mask stall at a procurement fair for epidemic-prevention materials in Shanghai following the coronavirus disease (COVID-19) outbreak, China July 22, 2020. REUTERS/Aly Song

People wearing face masks are seen at a mask stall at a procurement fair for epidemic-prevention materials in Shanghai following the coronavirus disease (COVID-19) outbreak, China July 22, 2020. REUTERS/Aly Song

A man wearing a face mask adjusts a machine of atomization disinfection at a procurement fair for epidemic-prevention materials in Shanghai following the coronavirus disease (COVID-19) outbreak, China July 22, 2020. REUTERS/Aly Song

A man wearing a face mask walks past a machine of atomization disinfection at a procurement fair for epidemic-prevention materials in Shanghai following the coronavirus disease (COVID-19) outbreak, China July 22, 2020. REUTERS/Aly Song

People wearing face masks visit a mask stall at a procurement fair for epidemic-prevention materials in Shanghai following the coronavirus disease (COVID-19) outbreak, China July 22, 2020. REUTERS/Aly Song

People wearing face masks visit a mask stall at a procurement fair for epidemic-prevention materials in Shanghai following the coronavirus disease (COVID-19) outbreak, China July 22, 2020. REUTERS/Aly Song

Demonstrators use garbage cans, umbrellas, and other materials as makeshift shields during a protest against racial inequality in Portland, Oregon, U.S., July 19, 2020. REUTERS/Caitlin Ochs

EMT’s cleanse their materials outside Memorial West Hospital where coronavirus disease (COVID-19) patients are treated, in Pembroke Pines, Florida, U.S. July 13, 2020. REUTERS/Maria Alejandra Cardona

EMTs cleanse their materials outside Memorial West Hospital where coronavirus disease (COVID-19) patients are treated, in Pembroke Pines, Florida, U.S. July 13, 2020. REUTERS/Maria Alejandra Cardona TPX IMAGES OF THE DAY

EMT’s cleanse their materials outside Jackson Health Center, where coronavirus disease (COVID-19) patients are treated, in Miami, Florida, U.S. July 13, 2020. REUTERS/Maria Alejandra Cardona

A job seeker holds a board advertising his skills as a waste picker pulls a trolley past, loaded with recyclable materials, amid the spread of the coronavirus disease (COVID-19), in Johannesburg, South Africa, July 2, 2020. REUTERS/Siphiwe Sibeko

An employee works on new products including protective gear for the coronavirus disease (COVID-19) made with upcycled material from old fishing nets at the Saint Louis Plas Mold factory amid the spread of the COVID-19 in Ayutthaya province, Thailand, June 30, 2020. Picture taken June 30, 2020. REUTERS/Juarawee Kittisilpa

An employee works on new products including protective gear for the coronavirus disease (COVID-19) made with upcycled material from old fishing nets at the Saint Louis Plas Mold factory amid the spread of the COVID-19 in Ayutthaya province, Thailand, June 30, 2020. Picture taken June 30, 2020. REUTERS/Juarawee Kittisilpa

SENSITIVE MATERIAL. THIS IMAGE MAY OFFEND OR DISTURB A plainclothes police officer collects ammunition next to the body of a suspected attacker at the site of an attack outside Pakistan Stock Exchange in Karachi June 29, 2020. REUTERS/Akhtar Soomro

ATTENTION EDITORS - SENSITIVE MATERIAL. THIS IMAGE MAY OFFEND OR DISTURB. An expert at the Observatoire Pelagis examines the body of a dolphin, which was found dead on a beach, during scientific autopsies at municipal technical services in Barbatre on the Noirmoutier Island, France, February 11, 2020. Picture taken February 11, 2020. REUTERS/Stephane Mahe

A pharmacist doctor works on the basics of the raw materials for investigational of the coronavirus disease (COVID-19) treatment drug "Remdesivir", in Ibn Sina laboratory, at Eva Pharma Facility in Cairo, Egypt June 25, 2020. REUTERS/Amr Abdallah Dalsh

A pharmacist doctor works on the basics of the raw materials for investigational of the coronavirus disease (COVID-19) treatment drug "Remdesivir", in Ibn Sina laboratory, at Eva Pharma Facility in Cairo, Egypt June 25, 2020. REUTERS/Amr Abdallah Dalsh

A pharmacist doctor works on the basics of the raw materials for investigational of the coronavirus disease (COVID-19) treatment drug "Remdesivir", in Ibn Sina laboratory, at Eva Pharma Facility in Cairo, Egypt June 25, 2020. REUTERS/Amr Abdallah Dalsh

A pharmacist doctor works on the basics of the raw materials for investigational of the coronavirus disease (COVID-19) treatment drug "Remdesivir", in Ibn Sina laboratory, at Eva Pharma Facility in Cairo, Egypt June 25, 2020. REUTERS/Amr Abdallah Dalsh

A pharmacist doctor works on the basics of the raw materials for investigational of the coronavirus disease (COVID-19) treatment drug "Remdesivir", in Ibn Sina laboratory, at Eva Pharma Facility in Cairo, Egypt June 25, 2020. REUTERS/Amr Abdallah Dalsh

Protestors move construction materials and fencing to re-block H Street, Northwest along Lafayette Park across from the White House after Washington Metropolitan Police officers pushed back racial inequality protestors to re-open the street and clear it for the resumption of vehicle traffic in Washington, D.C., U.S., June 22, 2020. REUTERS/Tom Brenner

Hand sanitiser and cleaning material are placed outside a bedroom of a brothel, after the Greek government released health and safety guidelines for sex workers against the spread of coronavirus disease (COVID-19), in Athens, Greece June 17, 2020. REUTERS/Alkis Konstantinidis

Lydia Hassebroek wears a PS 34 class of 2020 t-shirt before walking to Starbucks for a celebratory treat after picking up materials for digital graduation during the outbreak of the coronavirus disease (COVID-19) in Brooklyn, New York, U.S., June 11, 2020. REUTERS/Caitlin Ochs

A PS 34 staff member hands Lydia Hassebroek her bagged cap, gown, yearbook, and other materials for the end of the school year in preparation for digital graduation during the outbreak of the coronavirus disease (COVID-19) in Brooklyn, New York, U.S., June 11, 2020. REUTERS/Caitlin Ochs

Lydia Hassebroek carries her bagged cap, gown, yearbook, and other materials for the end of the school year in preparation for digital graduation during the outbreak of the coronavirus disease (COVID-19) in Brooklyn, New York, U.S., June 11, 2020. REUTERS/Caitlin Ochs

Lydia Hassebroek scoots to pick up the end of year school materials with her parents and brother Felix before digital graduation during the outbreak of the coronavirus disease (COVID-19) in Brooklyn, New York, U.S., June 11, 2020. REUTERS/Caitlin Ochs

A child flips through the air as he plays on dumped plastic materials amid the spread of the coronavirus disease (COVID-19) within Kibera slums in Nairobi, Kenya June 7, 2020. REUTERS/Thomas Mukoya

Children flip through the air as they play on dumped plastic materials amid the spread of the coronavirus disease (COVID-19) within Kibera slums in Nairobi, Kenya June 7, 2020. REUTERS/Thomas Mukoya TPX IMAGES OF THE DAY

ATTENTION EDITORS - SENSITIVE MATERIAL. THIS IMAGE MAY OFFEND OR DISTURB A demonstrator is seen with a placard as police officers look on during a Black Lives Matter protest in London, following the death of George Floyd who died in police custody in Minneapolis, London, Britain, June 6, 2020. REUTERS/John Sibley