French street artist Saype poses at the Eiffel Tower in front of his giant artwork "Beyond Walls", a spray-paint series of interlocked hands across the lawns of the Champs de Mars in Paris, France, June 14, 2019. His biodegradable painting pays tribute to the work of the migrant charity SOS Mediterranee. REUTERS/Philippe Wojazer

French street artist Saype poses at the Eiffel Tower in front of his giant artwork "Beyond Walls", a spray-paint series of interlocked hands across the lawns of the Champs de Mars in Paris, France, June 14, 2019. His biodegradable painting pays tribute to the work of the migrant charity SOS Mediterranee. REUTERS/Philippe Wojazer

French street artist Saype poses at the Eiffel Tower in front of his giant artwork "Beyond Walls", a spray-paint series of interlocked hands across the lawns of the Champs de Mars in Paris, France, June 14, 2019. His biodegradable painting pays tribute to the work of the migrant charity SOS Mediterranee. REUTERS/Philippe Wojazer

French street artist Saype poses at the Eiffel Tower in front of his giant artwork "Beyond Walls", a spray-paint series of interlocked hands across the lawns of the Champs de Mars in Paris, France, June 14, 2019. His biodegradable painting pays tribute to the work of the migrant charity SOS Mediterranee. REUTERS/Philippe Wojazer

VeganBottles with zero oil 100% biodegradable compostable made from sugar cane are seen on the production line at the Lyspackaging factory in Saintes, France, September 13, 2018. REUTERS/Regis Duvignau

VeganBottles with zero oil 100% biodegradable compostable made from sugar cane are pictured on the production line at the Lyspackaging factory in Saintes, France, September 13, 2018. REUTERS/Regis Duvignau

A VeganBottle with zero oil 100% biodegradable compostable made from sugar cane is seen on the production line at the Lyspackaging factory in Saintes, France, September 13, 2018. REUTERS/Regis Duvignau

VeganBottles with zero oil 100% biodegradable compostable made from sugar cane are seen on the production line at the Lyspackaging factory in Saintes, France, September 13, 2018. REUTERS/Regis Duvignau

VeganBottles with zero oil 100% biodegradable compostable made from sugar cane are seen on the production line at the Lyspackaging factory in Saintes, France, September 13, 2018. REUTERS/Regis Duvignau

VeganBottles with zero oil 100% biodegradable compostable made from sugar cane are seen on the production line at the Lyspackaging factory in Saintes, France, September 13, 2018. REUTERS/Regis Duvignau

An employee holds a VeganBottle with zero oil 100% biodegradable compostable made from sugar cane at the Lyspackaging factory in Saintes, France, September 13, 2018. REUTERS/Regis Duvignau

A VeganBottle with zero oil 100% biodegradable compostable made from sugar cane is seen on the production line at the Lyspackaging factory in Saintes, France, September 13, 2018. REUTERS/Regis Duvignau

A VeganBottle with zero oil 100% biodegradable compostable made from sugar cane is seen on the production line at the Lyspackaging factory in Saintes, France, September 13, 2018. REUTERS/Regis Duvignau

An employee holds a VeganBottle with zero oil 100% biodegradable compostable made from sugar cane at the Lyspackaging factory in Saintes, France, September 13, 2018. REUTERS/Regis Duvignau

VeganBottle with zero oil 100% biodegradable compostable made from sugar cane is pictured near bagasse sugar cane (L) and the raw material (C) at the Lyspackaging factory in Saintes, France, September 13, 2018. REUTERS/Regis Duvignau

Packaging of VeganBottles with zero oil 100% biodegradable compostable made from sugar cane is pictured on the production line at the Lyspackaging factory in Saintes, France, September 13, 2018. REUTERS/Regis Duvignau

VeganBottles with zero oil 100% biodegradable compostable made from sugar cane are displayed at the Lyspackaging factory in Saintes, France, September 13, 2018. REUTERS/Regis Duvignau

VeganBottle with zero oil 100% biodegradable compostable made from sugar cane are seen on the production line at the Lyspackaging factory in Saintes, France, September 13, 2018. REUTERS/Regis Duvignau

VeganBottle with zero oil 100% biodegradable compostable made from sugar cane are seen on the production line at the Lyspackaging factory in Saintes, France, September 13, 2018. REUTERS/Regis Duvignau

A VeganBottle with zero oil 100% biodegradable compostable made from sugar cane is seen on the production line at the Lyspackaging factory in Saintes, France, September 13, 2018. REUTERS/Regis Duvignau

Researcher Amal El Husseiny works on her project to create biodegradable plastic bags from shrimp shells, a project in collaboration with Nottingham University, at the Nile University in Cairo, Egypt February 28, 2017. Picture taken February 28, 2017. REUTERS/ Mohamed Zaki

Researcher Marwa Faisal works on her project to create biodegradable plastic bags from shrimp shells, a project in collaboration with Nottingham University, at the Nile University in Cairo, Egypt February 28, 2017. Picture taken February 28, 2017. REUTERS/ Mohamed Zaki

Assistant professor Irene Samy and researcher Marwa Faisal work on their project to create biodegradable plastic bags from shrimp shells, a project in collaboration with Nottingham University, at the Nile University in Cairo, Egypt February 28, 2017. Picture taken February 28, 2017. REUTERS/ Mohamed Zaki

Shells and peel shrimp are seen before creating biodegradable plastic bags, a project in collaboration with Nottingham University, at the Nile University in Cairo, Egypt February 28, 2017. Picture taken February 28, 2017. REUTERS/ Mohamed Zaki

Researcher Marwa Faisal works on her project to create biodegradable plastic bags from shrimp shells, in collaboration with Nottingham University, at the Nile University in Cairo, Egypt February 28, 2017. Picture taken February 28, 2017. REUTERS/ Mohamed Zaki

Researcher Hani Chbib talks with Reuters TV about the project to create biodegradable plastic bags from shrimp shells in collaboration with Nottingham University, at the Nile University in Cairo, Egypt February 28, 2017. Picture taken February 28, 2017. REUTERS/ Mohamed Zaki

Biodegradable urns are seen during an organic market in Lisbon, Portugal, November 5, 2016. REUTERS/Rafael Marchante

PLASTIC-WORMS/ - Explainer on how mealworms can help biodegrade Styrofoam. (SIN04)

A crew cleans an automobile at Eco Clean Auto Clean in Redwood City, California May 12, 2015. The car wash uses no hoses or running water and approximately one cup of water, mixed with a biodegradable formula, is required for each vehicle it cleans, according to the owner. REUTERS/Robert Galbraith TPX IMAGES OF THE DAY

A worker cleans the window of an automobile at Eco Clean Auto Clean in Redwood City, California May 12, 2015. The car wash uses no hoses or running water and approximately one cup of water, mixed with a biodegradable formula, is required for each vehicle it cleans, according to the owner. REUTERS/Robert Galbraith

A worker applies a cleaning solution to an automobile at Eco Clean Auto Clean in Redwood City, California May 12, 2015. The car wash uses no hoses or running water and approximately one cup of water, mixed with a biodegradable formula, is required for each vehicle it cleans, according to the owner. REUTERS/Robert Galbraith

A worker cleans the window of an automobile at Eco Clean Auto Clean in Redwood City, California May 12, 2015. The car wash uses no hoses or running water and approximately one cup of water, mixed with a biodegradable formula, is required for each vehicle it cleans, according to the owner. REUTERS/Robert Galbraith

A worker tosses a towel while cleaning an automobile at Eco Clean Auto Clean in Redwood City, California May 12, 2015. The car wash uses no hoses or running water and approximately one cup of water, mixed with a biodegradable formula, is required for each vehicle it cleans, according to the owner. REUTERS/Robert Galbraith

A crew member cleans the window of an automobile at Eco Clean Auto Clean in Redwood City, California May 12, 2015. The car wash uses no hoses or running water and approximately one cup of water, mixed with a biodegradable formula, is required for each vehicle it cleans, according to the owner. REUTERS/Robert Galbraith

A worker wrings water from a towel while cleaning an automobile at Eco Clean Auto Clean in Redwood City, California May 12, 2015. The car wash uses no hoses or running water and approximately one cup of water, mixed with a biodegradable formula, is required for each vehicle it cleans, according to the owner. REUTERS/Robert Galbraith

A crew cleans an automobile at Eco Clean Auto Clean in Redwood City, California May 12, 2015. The car wash uses no hoses or running water and approximately one cup of water, mixed with a biodegradable formula, is required for each vehicle it cleans, according to the owner. REUTERS/Robert Galbraith

An automobile is seen at the entrance to Eco Clean Auto Clean in Redwood City, California May 12, 2015. The car wash uses no hoses or running water and approximately one cup of water, mixed with a biodegradable formula, is required for each vehicle it cleans, according to the owner. REUTERS/Robert Galbraith

A crew member cleans the wheels of an automobile at Eco Clean Auto Clean in Redwood City, California May 12, 2015. The car wash uses no hoses or running water and approximately one cup of water, mixed with a biodegradable formula, is required for each vehicle it cleans, according to the owner. REUTERS/Robert Galbraith

A crew member reaches for a clean towel while cleaning an automobile at Eco Clean Auto Clean in Redwood City, California May 12, 2015. The car wash uses no hoses or running water and approximately one cup of water, mixed with a biodegradable formula, is required for each vehicle it cleans, according to the owner. REUTERS/Robert Galbraith

A worker is reflected in a window while cleaning an automobile at Eco Clean Auto Clean in Redwood City, California May 12, 2015. The car wash uses no hoses or running water and approximately one cup of water, mixed with a biodegradable formula, is required for each vehicle it cleans, according to the owner. REUTERS/Robert Galbraith

A ladder and towel are seen at Eco Clean Auto Clean in Redwood City, California May 12, 2015. The car wash uses no hoses or running water and approximately one cup of water, mixed with a biodegradable formula, is required for each vehicle it cleans, according to the owner. REUTERS/Robert Galbraith

Cleaning solutions are seen near an automobile at Eco Clean Auto Clean in Redwood City, California May 12, 2015. The car wash uses no hoses or running water and approximately one cup of water, mixed with a biodegradable formula, is required for each vehicle it cleans, according to the owner. REUTERS/Robert Galbraith

A man walks through a field of maize, planted under a film of biodegradable plastic which raises the soil temperature at the start of the season, near the city of Londonderry May 19, 2014. REUTERS/Cathal McNaughton (NORTHERN IRELAND - Tags: SOCIETY AGRICULTURE)

A man walks through a field of maize, planted under a film of biodegradable plastic which raises the soil temperature at the start of the season, near the city of Londonderry May 19, 2014. REUTERS/Cathal McNaughton (NORTHERN IRELAND - Tags: AGRICULTURE SOCIETY TPX IMAGES OF THE DAY)

Brazilian agronomist Mateus Marrafon (L) plants seeds on tape in an experimental plantation at a university in Ribeirao Preto January 7, 2014. Marrafon created a prototype biodegradable tape which holds seeds for planting, and features fixed spacing of seeds for growth. The tape disintegrates after being planted in the soil. The Bill & Melinda Gates Foundation funded the project with $100,000, according to local media, and further testing will be done in Africa, according to Marrafon, who also expects the seed tape to increase productivity on family farms. REUTERS/Paulo Whitaker (BRAZIL - Tags: AGRICULTURE SCIENCE TECHNOLOGY BUSINESS)

Seeds are applied on a biodegradable tape at a university in Ribeirao Preto January 7, 2014. Brazilian agronomist Mateus Marrafon created a prototype biodegradable tape which holds seeds for planting, and features fixed spacing of seeds for growth. The tape disintegrates after being planted in the soil. The Bill & Melinda Gates Foundation funded the project with $100,000, according to local media, and further testing will be done in Africa, according to Marrafon, who also expects the seed tape to increase productivity on family farms. REUTERS/Paulo Whitaker (BRAZIL - Tags: AGRICULTURE BUSINESS SCIENCE TECHNOLOGY)

Seeds are applied on a biodegradable tape at a university in Ribeirao Preto January 7, 2014. Brazilian agronomist Mateus Marrafon created a prototype biodegradable tape which holds seeds for planting, and features fixed spacing of seeds for growth. The tape disintegrates after being planted in the soil. The Bill & Melinda Gates Foundation funded the project with $100,000, according to local media, and further testing will be done in Africa, according to Marrafon, who also expects the seed tape to increase productivity on family farms. REUTERS/Paulo Whitaker (BRAZIL - Tags: AGRICULTURE SCIENCE TECHNOLOGY BUSINESS)

Seeds are applied on a biodegradable tape at a university in Ribeirao Preto January 7, 2014. Brazilian agronomist Mateus Marrafon created a prototype biodegradable tape which holds seeds for planting, and features fixed spacing of seeds for growth. The tape disintegrates after being planted in the soil. The Bill & Melinda Gates Foundation funded the project with $100,000, according to local media, and further testing will be done in Africa, according to Marrafon, who also expects the seed tape to increase productivity on family farms. REUTERS/Paulo Whitaker (BRAZIL - Tags: AGRICULTURE SCIENCE TECHNOLOGY BUSINESS)

Brazilian agronomist Mateus Marrafon pushes a seed drill at a university in Ribeirao Preto January 7, 2014. Marrafon created a prototype biodegradable tape which holds seeds for planting, and features fixed spacing of seeds for growth. The tape disintegrates after being planted in the soil. The Bill & Melinda Gates Foundation funded the project with $100,000, according to local media, and further testing will be done in Africa, according to Marrafon, who also expects the seed tape to increase productivity on family farms. REUTERS/Paulo Whitaker (BRAZIL - Tags: AGRICULTURE BUSINESS SCIENCE TECHNOLOGY)

Brazilian agronomist Mateus Marrafon (L) pushes a seed drill at a university in Ribeirao Preto January 7, 2014. Marrafon created a prototype biodegradable tape which holds seeds for planting, and features fixed spacing of seeds for growth. The tape disintegrates after being planted in the soil. The Bill & Melinda Gates Foundation funded the project with $100,000, according to local media, and further testing will be done in Africa, according to Marrafon, who also expects the seed tape to increase productivity on family farms. REUTERS/Paulo Whitaker (BRAZIL - Tags: AGRICULTURE SCIENCE TECHNOLOGY BUSINESS)

Brazilian agronomist Mateus Marrafon holds a biodegradable tape with seeds as he talks to Reuters in an university in Ribeirao Preto January 7, 2014. Marrafon created a prototype biodegradable tape which holds seeds for planting, and features fixed spacing of seeds for growth. The tape disintegrates after being planted in the soil. The Bill & Melinda Gates Foundation funded the project with $100,000, according to local media, and further testing will be done in Africa, according to Marrafon, who also expects the seed tape to increase productivity on family farms. REUTERS/Paulo Whitaker (BRAZIL - Tags: AGRICULTURE SCIENCE TECHNOLOGY BUSINESS)

Seeds are applied on a biodegradable tape at a university in Ribeirao Preto January 7, 2014. Brazilian agronomist Mateus Marrafon created a prototype biodegradable tape which holds seeds for planting, and features fixed spacing of seeds for growth. The tape disintegrates after being planted in the soil. The Bill & Melinda Gates Foundation funded the project with $100,000, according to local media, and further testing will be done in Africa, according to Marrafon, who also expects the seed tape to increase productivity on family farms. REUTERS/Paulo Whitaker (BRAZIL - Tags: AGRICULTURE SCIENCE TECHNOLOGY BUSINESS)

Seeds are applied on a biodegradable tape at a university in Ribeirao Preto January 7, 2014. Brazilian agronomist Mateus Marrafon created a prototype biodegradable tape which holds seeds for planting, and features fixed spacing of seeds for growth. The tape disintegrates after being planted in the soil. The Bill & Melinda Gates Foundation funded the project with $100,000, according to local media, and further testing will be done in Africa, according to Marrafon, who also expects the seed tape to increase productivity on family farms. REUTERS/Paulo Whitaker (BRAZIL - Tags: AGRICULTURE SCIENCE TECHNOLOGY BUSINESS)

Brazilian agronomist Mateus Marrafon (L) plants seeds on tape in an experimental plantation at a university in Ribeirao Preto January 7, 2014. Marrafon created a prototype biodegradable tape which holds seeds for planting, and features fixed spacing of seeds for growth. The tape disintegrates after being planted in the soil. The Bill & Melinda Gates Foundation funded the project with $100,000, according to local media, and further testing will be done in Africa, according to Marrafon, who also expects the seed tape to increase productivity on family farms. REUTERS/Paulo Whitaker (BRAZIL - Tags: AGRICULTURE SCIENCE TECHNOLOGY BUSINESS)

Brazilian agronomist Mateus Marrafon is silhouetted while planting seeds on tape with a manual seed drill, in an experimental plantation at a university in Ribeirao Preto January 7, 2014. Marrafon created a prototype biodegradable tape which holds seeds for planting, and features fixed spacing of seeds for growth. The tape disintegrates after being planted in the soil. The Bill & Melinda Gates Foundation funded the project with $100,000, according to local media, and further testing will be done in Africa, according to Marrafon, who also expects the seed tape to increase productivity on family farms. REUTERS/Paulo Whitaker (BRAZIL - Tags: AGRICULTURE SCIENCE TECHNOLOGY BUSINESS)

Environmental advocates pick up trash along a coastline to mark International Coastal Cleanup Day in Paranaque city, metro Manila September 21, 2013. About 5,000 volunteers, government workers and activists collected plastics and other non-biodegradable waste washed ashore along a 175 hectare marshland, home to about 82 species of migratory birds on the south-western coast of Manila. The National Solid Waste Management Commission reported that Manila, with 10 million inhabitants, produces 8,700 tonnes of garbage daily, which is the largest amount in the country. REUTERS/Romeo Ranoco (PHILIPPINES - Tags: ENVIRONMENT SOCIETY)

Environmental advocates pick up trash along a coastline to mark International Coastal Cleanup Day in Paranaque city, metro Manila September 21, 2013. About 5,000 volunteers, government workers and activists collected plastics and other non-biodegradable waste washed ashore along a 175 hectare marshland, home to about 82 species of migratory birds on the south-western coast of Manila. The National Solid Waste Management Commission reported that Manila, with 10 million inhabitants, produces 8,700 tonnes of garbage daily, which is the largest amount in the country. REUTERS/Romeo Ranoco (PHILIPPINES - Tags: ENVIRONMENT SOCIETY)