Jose Luis Espinoza, 68, looks on before receiving a dose of the Pfizer vaccine against the coronavirus disease (COVID-19) after waiting for a leftover one at a clinic in Santa Fe Springs, California, United States, February 2, 2021. Picture taken February 2, 2021. REUTERS/Norma Galeana

Jose Luis Espinoza, 68, receives a dose of the Pfizer vaccination against the coronavirus disease (COVID-19) after waiting for a leftover one at a clinic in Santa Fe Springs, California, United States, February 2, 2021. Picture taken February 2, 2021. REUTERS/Norma Galeana

Jose Luis Espinoza, 68, receives a dose of the Pfizer vaccine against the coronavirus disease (COVID-19) after waiting for a leftover one at a clinic in Santa Fe Springs, California, United States, February 2, 2021. Picture taken February 2, 2021. REUTERS/Norma Galeana

Leftovers of a fast food meal are seen on a snow covered table of a closed restaurant after the Austrian government announced to extend the lockdown as the coronavirus disease (COVID-19) outbreak continues in Vienna, Austria, January 17, 2021. REUTERS/Lisi Niesner

Organic dairy farmer Kevin Stuedemann feeds leftover whey to his pigs on Derrydale Farm in Belle Plaine, Minnesota, U.S., October 24, 2020. Picture taken October 24, 2020. REUTERS/Bing Guan

Organic dairy farmer Kevin Stuedemann feeds leftover whey to his pigs on Derrydale Farm in Belle Plaine, Minnesota, U.S., October 24, 2020. Picture taken October 24, 2020. REUTERS/Bing Guan

An hairdresser displays cut hair near a sign which reads "1kilo of hair = 200 liters of water saved" in a makeshift hair salon during a free haircut opportunity organized with Capillum, a startup company specialized in recycling leftover hair, for Chateau de Versailles employees in Versailles, near Paris, France, October 8, 2020. REUTERS/Lucien Libert

James Taylor and Clement Baldellou, co-founders of Capillum, a startup company specialized in recycling leftover hair, pose during a free haircut opportunity organized for Chateau de Versailles employees to collect their hair, in Versailles, near Paris, France, October 8, 2020. REUTERS/Lucien Libert

Hairdressers cut the hair of Chateau de Versailles employees during a free haircut opportunity organized with Capillum, a startup company specialized in recycling leftover hair, in Versailles, near Paris, France, October 8, 2020. REUTERS/Lucien Libert

The logo of Capillum is seen in a makeshift hair salon during a free haircut opportunity organized with Capillum, a startup company specialized in recycling leftover hair, for Chateau de Versailles employees in Versailles, near Paris, France, October 8, 2020. REUTERS/Lucien Libert

James Taylor and Clement Baldellou, co-founders of Capillum, a startup company specialized in recycling leftover hair, President of Chateau de Versailles Catherine Pegard, training hair-dressers and other officials pose in front of the Versailles palace before a free haircut opportunity organized for Chateau de Versailles employees to collect their hair, in Versailles, near Paris, France, October 8, 2020. REUTERS/Lucien Libert

James Taylor and Clement Baldellou, co-founders of Capillum, a startup company specialized in recycling leftover hair, President of Chateau de Versailles Catherine Pegard, training hair-dressers and other officials pose in front of the Versailles palace before a free haircut opportunity organized for Chateau de Versailles employees to collect their hair, in Versailles, near Paris, France, October 8, 2020. REUTERS/Lucien Libert

James Taylor and Clement Baldellou, co-founders of Capillum, a startup company specialized in recycling leftover hair, pose during a free haircut opportunity organized for Chateau de Versailles employees to collect their hair, in Versailles, near Paris, France, October 8, 2020. REUTERS/Lucien Libert

A hairdresser cuts the hair of a Chateau de Versailles employee during a free haircut opportunity organized with Capillum, a startup company specialized in recycling leftover hair, in Versailles, near Paris, France, October 8, 2020. A sign reads "1kilo of hair = 200 liters of water saved". REUTERS/Lucien Libert

Hairdressers cut the hair of Chateau de Versailles employees during a free haircut opportunity organized with Capillum, a startup company specialized in recycling leftover hair, in Versailles, near Paris, France, October 8, 2020. REUTERS/Lucien Libert

James Taylor and Clement Baldellou, co-founders of Capillum, a startup company specialized in recycling leftover hair, pose in front of the Chateau de Versailles before a free haircut opportunity organized for Chateau de Versailles employees to collect their hair, in Versailles, near Paris, France, October 8, 2020. REUTERS/Lucien Libert

Mya Lay (R), 25, and her colleagues, who used to work at a marble mine but lost their jobs, pick leftover peanuts at a farm where they now work in Sagyin, Mandalay, Myanmar, February 15, 2019. "I was born in this village and for generations this is what we have done: the men work on marble carving and the women work in the marble mines or polish the marble statues," said Lay. REUTERS/Ann Wang SEARCH "SAGYIN MARBLE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Leftovers of worker's food are pictured inside an illegal sawmill during a police operation named Flora Amazonica against illegal sawmills and loggers in Manacapuru near Manaus, Amazonas state, Brazil June 2, 2020. REUTERS/Bruno Kelly

A farmer works among tons of potatoes part of which is leftover due to the closure of restaurants and borders following the coronavirus disease (COVID-19) outbreak, near the city of Mouscron, Belgium April 29, 2020. REUTERS/Yves Herman

A farmer works among tons of potatoes part of which is leftover due to the closure of restaurants and borders following the coronavirus disease (COVID-19) outbreak, near the city of Mouscron, Belgium April 29, 2020. REUTERS/Yves Herman

A farmer works among tons of potatoes part of which is leftover due to the closure of restaurants and borders following the coronavirus disease (COVID-19) outbreak, near the city of Mouscron, Belgium April 29, 2020. REUTERS/Yves Herman

Potatoes part of which is leftover due to the closure of restaurants and borders following the coronavirus disease (COVID-19) outbreak, are seen at a potatoes farm near the city of Mouscron, Belgium April 29, 2020. REUTERS/Yves Herman

A farmer works among tons of potatoes part of which is leftover due to the closure of restaurants and borders following the coronavirus disease (COVID-19) outbreak, near the city of Mouscron, Belgium April 29, 2020. REUTERS/Yves Herman

A man points at tons of potatoes part of which is leftover due to the closure of restaurants and borders following the coronavirus disease (COVID-19) outbreak, near the city of Mouscron, Belgium April 29, 2020. REUTERS/Yves Herman

Gert McMullin, one of the original volunteers of the NAMES Project AIDS Memorial Quilt, uses leftover fabric from the quilt to make face masks for front line workers and vulnerable populations during the coronavirus disease (COVID-19) crisis in San Leandro, California, U.S. April 16, 2020. REUTERS/Kate Munsch

Gert McMullin, one of the original volunteers of the NAMES Project AIDS Memorial Quilt, uses leftover fabric from the quilt to make face masks for front line workers and vulnerable populations during the coronavirus disease (COVID-19) crisis in San Leandro, California, U.S. April 16, 2020. REUTERS/Kate Munsch

Gert McMullin, one of the original volunteers of the NAMES Project AIDS Memorial Quilt, uses leftover fabric from the quilt to make face masks for front line workers and vulnerable populations during the coronavirus disease (COVID-19) crisis in San Leandro, California, U.S. April 16, 2020. REUTERS/Kate Munsch

Gert McMullin, one of the original volunteers of the NAMES Project AIDS Memorial Quilt, uses leftover fabric from the quilt to make face masks for front line workers and vulnerable populations during the coronavirus disease (COVID-19) crisis in San Leandro, California, U.S. April 16, 2020. REUTERS/Kate Munsch

Gert McMullin, one of the original volunteers of the NAMES Project AIDS Memorial Quilt, uses leftover fabric from the quilt to make face masks for front line workers and vulnerable populations during the coronavirus disease (COVID-19) crisis in San Leandro, California, U.S. April 16, 2020. REUTERS/Kate Munsch

Daily wage workers, who used to work at a wholesale grain market, and their family members collect leftover paddy from the empty wholesale market during an extended nationwide lockdown to slow the spreading of coronavirus disease (COVID-19), in Chandigarh, India, April 16, 2020. REUTERS/Ajay Verma

Pooja, 8, daughter of a daily wage worker who used to work at a wholesale grain market, collects leftover paddy from the empty wholesale market during an extended nationwide lockdown to slow the spreading of coronavirus disease (COVID-19), in Chandigarh, India, April 16, 2020. REUTERS/Ajay Verma

Daily wage workers, who used to work at a wholesale grain market, collect leftover paddy from the empty wholesale market during an extended nationwide lockdown to slow the spreading of coronavirus disease (COVID-19), in Chandigarh, India, April 16, 2020. REUTERS/Ajay Verma

San Diego Food Bank volunteers carry boxes of leftover food after an emergency drive-through food and toilet paper distribution hosted at Southwestern College near the U.S.-Mexico border, amid the coronavirus disease (COVID-19) outbreak in Chula Vista, California, U.S., April 10, 2020. Picture taken through glass. REUTERS/Bing Guan

A remains of a protective face mask is seen as the spread of the coronavirus disease (COVID-19) continues, London, Britain, April 2, 2020. REUTERS/Toby Melville

A general view of empty ancient temples usually crowded with tourists is seen following the coronavirus disease (COVID-19) outbreak, at the ancient city Ayutthaya, Thailand March 30, 2020. REUTERS/Soe Zeya Tun

A statue, part of the ancient temples usually crowded with tourists, is seen following the coronavirus disease (COVID-19) outbreak, at the ancient city Ayutthaya, Thailand March 30, 2020. REUTERS/Soe Zeya Tun

A general view of empty ancient temples usually crowded with tourists is seen following the coronavirus disease (COVID-19) outbreak, at the ancient city Ayutthaya, Thailand March 30, 2020. REUTERS/Soe Zeya Tun

A general view of empty ancient temples usually crowded with tourists is seen following the coronavirus disease (COVID-19) outbreak, at the ancient city Ayutthaya, Thailand March 30, 2020. REUTERS/Soe Zeya Tun

General view of the remains of Brighton West Pier during sunset, as the spread of the coronavirus disease (COVID-19) continues, in Brighton, Britain, March 24, 2020. REUTERS/Peter Cziborra

General view of the remains of Brighton West Pier during sunset, as the spread of the coronavirus disease (COVID-19) continues, in Brighton, Britain, March 24, 2020. REUTERS/Peter Cziborra

General view of the remains of Brighton West Pier during sunset, as the spread of the coronavirus disease (COVID-19) continues, in Brighton, Britain, March 24, 2020. REUTERS/Peter Cziborra

A homeless person sleeps on a street in Rome, Italy, March 17, 2020. Since the coronavirus crisis, Red Cross workers have been increasing their daily activities to meet the growing needs of the homeless in Rome. With nobody around on the streets to give them food or money, and restaurants that would usually donate leftovers closed, homeless are struggling to find food and other supplies to keep them going. REUTERS/Guglielmo Mangiapane

Homeless people sleep on a street in Rome, Italy, March 17, 2020. Since the coronavirus crisis, Red Cross workers have been increasing their daily activities to meet the growing needs of the homeless in Rome. With nobody around on the streets to give them food or money, and restaurants that would usually donate leftovers closed, homeless are struggling to find food and other supplies to keep them going. REUTERS/Guglielmo Mangiapane

A homeless person talks to Red Cross workers in Rome, Italy, March 17, 2020. Since the coronavirus crisis, Red Cross workers have been increasing their daily activities to meet the growing needs of the homeless in Rome. With nobody around on the streets to give them food or money, and restaurants that would usually donate leftovers closed, homeless are struggling to find food and other supplies to keep them going. REUTERS/Guglielmo Mangiapane

Red Cross workers check on a homeless person sleeping near the Colosseum in Rome, Italy, March 17, 2020. Since the coronavirus crisis, Red Cross workers have been increasing their daily activities to meet the growing needs of the homeless in Rome. With nobody around on the streets to give them food or money, and restaurants that would usually donate leftovers closed, homeless are struggling to find food and other supplies to keep them going. REUTERS/Guglielmo Mangiapane

A homeless person sleeps on a street in Rome, Italy, March 17, 2020. Since the coronavirus crisis, Red Cross workers have been increasing their daily activities to meet the growing needs of the homeless in Rome. With nobody around on the streets to give them food or money, and restaurants that would usually donate leftovers closed, homeless are struggling to find food and other supplies to keep them going. REUTERS/Guglielmo Mangiapane

Red Cross workers check on a homeless person sleeping on the street in Rome, Italy, March 17, 2020. Since the coronavirus crisis, Red Cross workers have been increasing their daily activities to meet the growing needs of the homeless in Rome. With nobody around on the streets to give them food or money, and restaurants that would usually donate leftovers closed, homeless are struggling to find food and other supplies to keep them going. REUTERS/Guglielmo Mangiapane

A Red Cross worker checks on a homeless person lying on a step near the Colosseum in Rome, Italy, March 17, 2020. Since the coronavirus crisis, Red Cross workers have been increasing their daily activities to meet the growing needs of the homeless in Rome. With nobody around on the streets to give them food or money, and restaurants that would usually donate leftovers closed, homeless are struggling to find food and other supplies to keep them going. REUTERS/Guglielmo Mangiapane

Red Cross worker Giorgio Vacirca, 43, gets out of a van after spotting a homeless person in Rome, Italy, March 17, 2020. Since the coronavirus crisis, Red Cross workers have been increasing their daily activities to meet the growing needs of the homeless in Rome. With nobody around on the streets to give them food or money, and restaurants that would usually donate leftovers closed, homeless are struggling to find food and other supplies to keep them going. REUTERS/Guglielmo Mangiapane

A homeless person smokes a cigarette as he lies on a pavement in Rome, Italy, March 17, 2020. Since the coronavirus crisis, Red Cross workers have been increasing their daily activities to meet the growing needs of the homeless in Rome. With nobody around on the streets to give them food or money, and restaurants that would usually donate leftovers closed, homeless are struggling to find food and other supplies to keep them going. REUTERS/Guglielmo Mangiapane

A homeless person shows pictures of his three daughters in Rome, Italy, March 17, 2020. Since the coronavirus crisis, Red Cross workers have been increasing their daily activities to meet the growing needs of the homeless in Rome. With nobody around on the streets to give them food or money, and restaurants that would usually donate leftovers closed, homeless are struggling to find food and other supplies to keep them going. REUTERS/Guglielmo Mangiapane

A homeless person sleeps near to the Colosseum in Rome, Italy, March 17, 2020. Since the coronavirus crisis, Red Cross workers have been increasing their daily activities to meet the growing needs of the homeless in Rome. With nobody around on the streets to give them food or money, and restaurants that would usually donate leftovers closed, homeless are struggling to find food and other supplies to keep them going. REUTERS/Guglielmo Mangiapane

A homeless person stands next to a Red Cross worker in Rome, Italy, March 17, 2020. Since the coronavirus crisis, Red Cross workers have been increasing their daily activities to meet the growing needs of the homeless in Rome. With nobody around on the streets to give them food or money, and restaurants that would usually donate leftovers closed, homeless are struggling to find food and other supplies to keep them going. REUTERS/Guglielmo Mangiapane

A homeless person is treated by a Red Cross worker in Rome, Italy, March 17, 2020. Since the coronavirus crisis, Red Cross workers have been increasing their daily activities to meet the growing needs of the homeless in Rome. With nobody around on the streets to give them food or money, and restaurants that would usually donate leftovers closed, homeless are struggling to find food and other supplies to keep them going. REUTERS/Guglielmo Mangiapane

A homeless person sits on a pavement in Rome, Italy, March 17, 2020. Since the coronavirus crisis, Red Cross workers have been increasing their daily activities to meet the growing needs of the homeless in Rome. With nobody around on the streets to give them food or money, and restaurants that would usually donate leftovers closed, homeless are struggling to find food and other supplies to keep them going. REUTERS/Guglielmo Mangiapane

A homeless person stands outside a church in Rome, Italy, March 17, 2020. Since the coronavirus crisis, Red Cross workers have been increasing their daily activities to meet the growing needs of the homeless in Rome. With nobody around on the streets to give them food or money, and restaurants that would usually donate leftovers closed, homeless are struggling to find food and other supplies to keep them going. REUTERS/Guglielmo Mangiapane

A homeless person looks inside his tent in Rome, Italy, March 17, 2020. Since the coronavirus crisis, Red Cross workers have been increasing their daily activities to meet the growing needs of the homeless in Rome. With nobody around on the streets to give them food or money, and restaurants that would usually donate leftovers closed, homeless are struggling to find food and other supplies to keep them going. REUTERS/Guglielmo Mangiapane

A piece of bread and a stack of lottery tickets are seen outside a tent where a homeless person lives in Rome, Italy, March 17, 2020. Since the coronavirus crisis, Red Cross workers have been increasing their daily activities to meet the growing needs of the homeless in Rome. With nobody around on the streets to give them food or money, and restaurants that would usually donate leftovers closed, homeless are struggling to find food and other supplies to keep them going. REUTERS/Guglielmo Mangiapane

Red Cross worker Giorgio Vacirca, 43, looks out of van to spot homeless people in Rome, Italy, March 17, 2020. Since the coronavirus crisis, Red Cross workers have been increasing their daily activities to meet the growing needs of the homeless in Rome. With nobody around on the streets to give them food or money, and restaurants that would usually donate leftovers closed, homeless are struggling to find food and other supplies to keep them going. REUTERS/Guglielmo Mangiapane