A bee pollinates a blossomed almond branch in a field where farmers use techniques aimed at bringing new life to the land, in Hernan Valle, near Granada, Spain, March 10, 2020. Picture taken March 10, 2020. REUTERS/Jon Nazca

Joseph Frey, an executive at Edete Precision Technologies for Agriculture, gestures towards an almond tree that is being pollinated and fertilized by machine technology in an Almond grove in Tel Arad, southern Israel March 4, 2020. Picture taken on March 4, 2020. REUTERS/ Amir Cohen

A bee sits on a flower budding from an almond tree, which rely on natural pollinators for fertilization in an Almonds grove in Tel Arad, southern Israel March 4, 2020. Picture taken on March 4, 2020. REUTERS/ Amir Cohen

A bee sits on a flower budding from an almond tree, which rely on natural pollinators for fertilization in an Almonds grove in Tel Arad, southern Israel March 4, 2020. Picture taken on March 4, 2020. REUTERS/ Amir Cohen

A bee sits on a flower budding from an almond tree, which rely on natural pollinators for fertilization in an Almonds grove in Tel Arad, southern Israel March 4, 2020. Picture taken on March 4, 2020. REUTERS/ Amir Cohen

A tractor pulls a mast equipped with small cannons that shoot pollen at almond trees, allowing them to fertilize without bees in an Almonds grove in Tel Arad, southern Israel March 4, 2020. Picture taken on March 4, 2020. REUTERS/ Amir Cohen

A tractor pulls a mast equipped with small cannons that shoot pollen at almond trees, allowing them to fertilize without bees in an Almonds grove in Tel Arad, southern Israel March 4, 2020. Picture taken on March 4, 2020. REUTERS/ Amir Cohen

Tractors pull a mast equipped with small cannons that shoot pollen at almond trees, allowing them to fertilize without bees in an Almonds grove in Tel Arad, southern Israel March 4, 2020. Picture taken on March 4, 2020. REUTERS/ Amir Cohen

A demonstrator holds a placard reading "Your bullets are the bees that pollinate our revolution" as soldiers block a rally to the Chilean Congress, in Valparaiso, Chile October 22, 2019. REUTERS/Rodrigo Garrido

An employee pollinates a strawberry plant at Sustenir Agriculture's indoor farm in Singapore May 24, 2019. Picture taken May 24, 2019. REUTERS/Edgar Su

An employee pollinates strawberry plants at Sustenir Agriculture's indoor farm in Singapore May 24, 2019. Picture taken May 24, 2019. REUTERS/Edgar Su

Beekeeper Helder Martins looks at a hive on a farm where his bees pollinate the trees near Pias, Portugal, August 10, 2018. REUTERS/Rafael Marchante SEARCH "MARCHANTE ALQUEVA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

White anthers show a greenhouse-grown hybrid wheat plant self-pollinating at the bio-technology company Syngenta's research farm near Junction City, Kansas, U.S. May 4, 2017. REUTERS/Dave Kaup

A pollinated hybrid wheat plant matures at the bio-technology company Syngenta's research farm near Junction City, Kansas, U.S. May 4, 2017. REUTERS/Dave Kaup

A female greenhouse-grown hybrid wheat plant is developing the white anthers used to self-pollinate at the bio-technology company Syngenta's research farm near Junction City, Kansas, U.S. May 4, 2017. REUTERS/Dave Kaup

A Ph.D. candidate at Texas A&M University covers the shoot of a of corn plant so pollination can be controlled by hand in a corn research field in College Station, Texas, U.S., May 23, 2018. Picture taken on May 23, 2018. REUTERS/Adrees Latif

Ph.D. candidates at Texas A&M University cover the shoots of corn plants, so pollination can be controlled, in a research field in College Station, Texas, U.S., May 23, 2018. Picture taken on May 23, 2018. REUTERS/Adrees Latif

A bee collects pollen from blossoms in a public garden in Vienna, Austria, April 12, 2018. REUTERS/Heinz-Peter Bader

A bee collects pollen from blossoms in a public garden in Vienna, Austria, April 12, 2018. REUTERS/Heinz-Peter Bader

Ugandan former child soldier and survivor Polline Akello speaks at the Women in the World summit in London, Britain, October 9, 2015. REUTERS/Toby Melville

Visitors look at a blooming Titan Arum (Amorphophallus titanum), one of the world's largest and rare tropical flowering plants, at Basel's Botanical Garden September 29, 2014. The flower, which emits strong odour likened to rotting meat, which gives it it's common name 'corpse flower', wilts and dies after two days. Both the 'fragance' and the flower's meat-colouration attract pollinators - carrion flies and beetles. REUTERS/Arnd Wiegmann (SWITZERLAND - Tags: ENVIRONMENT SOCIETY)

Visitors look at a blooming Titan Arum (Amorphophallus titanum), one of the world's largest and rare tropical flowering plants, at Basel's Botanical Garden September 29, 2014. The flower, which emits strong odour likened to rotting meat, which gives it it's common name 'corpse flower', wilts and dies after two days. Both the 'fragance' and the flower's meat-colouration attract pollinators - carrion flies and beetles. REUTERS/Arnd Wiegmann (SWITZERLAND - Tags: ENVIRONMENT SOCIETY)

Visitors look at a blooming Titan Arum (Amorphophallus titanum), one of the world's largest and rare tropical flowering plants, at Basel's Botanical Garden September 29, 2014. The flower, which emits strong odour likened to rotting meat, which gives it it's common name 'corpse flower', wilts and dies after two days. Both the 'fragance' and the flower's meat-colouration attract pollinators - carrion flies and beetles. REUTERS/Arnd Wiegmann (SWITZERLAND - Tags: ENVIRONMENT SOCIETY)

Visitors look at a blooming Titan Arum (Amorphophallus titanum), one of the world's largest and rare tropical flowering plants, at Basel's Botanical Garden September 29, 2014. The flower, which emits strong odour likened to rotting meat, which gives it it's common name 'corpse flower', wilts and dies after two days. Both the 'fragance' and the flower's meat-colouration attract pollinators - carrion flies and beetles. REUTERS/Arnd Wiegmann (SWITZERLAND - Tags: ENVIRONMENT SOCIETY)

Visitors look at a blooming Titan Arum (Amorphophallus titanum), one of the world's largest and rare tropical flowering plants, at Basel's Botanical Garden September 29, 2014. The flower, which emits strong odour likened to rotting meat, which gives it it's common name 'corpse flower', wilts and dies after two days. Both the 'fragance' and the flower's meat-colouration attract pollinators - carrion flies and beetles. REUTERS/Arnd Wiegmann (SWITZERLAND - Tags: ENVIRONMENT SOCIETY)

Robert Harvey, a beekeeper, or apiarist, secures a cover over bee hives stacked on a truck as he prepares to transfer the bees to another crop after they completed pollinating a blueberry field near Columbia Falls, Maine June 23, 2014. Over recent years, bees have been dying at a rate the U.S. government says is economically unsustainable. Honey bees pollinate plants that produce about a quarter of the food consumed by Americans, including apples, watermelons and beans. A lawsuit has now been filed by environmental groups in the United States seeking an injunction restricting the approval of a controversial class of pesticides known as neonicotinoids, or 'neonics'. These pesticides have become a subject of scrutiny in Europe and the United States as concern has mounted that they harm honeybees and other pollinators. Picture taken June 23, 2014. REUTERS/Adrees Latif (UNITED STATES - Tags: HEALTH ANIMALS ENVIRONMENT AGRICULTURE BUSINESS)

David Hackenberg, 65, a beekeeper or apiarist, puts on a bee suite after taking a break between collecting bee hives after they completed pollinating a blueberry field near Jonesboro, Maine June 24, 2014. Over recent years, bees have been dying at a rate the U.S. government says is economically unsustainable. Honey bees pollinate plants that produce about a quarter of the food consumed by Americans, including apples, watermelons and beans. A lawsuit has now been filed by environmental groups in the United States seeking an injunction restricting the approval of a controversial class of pesticides known as neonicotinoids, or 'neonics'. These pesticides have become a subject of scrutiny in Europe and the United States as concern has mounted that they harm honeybees and other pollinators. Picture taken June 24, 2014. REUTERS/Adrees Latif (UNITED STATES - Tags: BUSINESS ANIMALS ENVIRONMENT AGRICULTURE)

A man is lowered with the help of a loader after securing a cover over bee hives stacked on a truck as beekeepers prepare to transfer the bees to another crop after they completed pollinating a blueberry field near Columbia Falls, Maine June 23, 2014. Over recent years, bees have been dying at a rate the U.S. government says is economically unsustainable. Honey bees pollinate plants that produce about a quarter of the food consumed by Americans, including apples, watermelons and beans. A lawsuit has now been filed by environmental groups in the United States seeking an injunction restricting the approval of a controversial class of pesticides known as neonicotinoids, or 'neonics'. These pesticides have become a subject of scrutiny in Europe and the United States as concern has mounted that they harm honeybees and other pollinators. Picture taken June 23, 2014. REUTERS/Adrees Latif (UNITED STATES - Tags: HEALTH ANIMALS ENVIRONMENT AGRICULTURE BUSINESS)

Beekeepers secure a cover over bee hives stacked on a truck as they prepare to transfer the bees to another crop after they completed pollinating a blueberry field near Columbia Falls, Maine June 23, 2014. Over recent years, bees have been dying at a rate the U.S. government says is economically unsustainable. Honey bees pollinate plants that produce about a quarter of the food consumed by Americans, including apples, watermelons and beans. A lawsuit has now been filed by environmental groups in the United States seeking an injunction restricting the approval of a controversial class of pesticides known as neonicotinoids, or 'neonics'. These pesticides have become a subject of scrutiny in Europe and the United States as concern has mounted that they harm honeybees and other pollinators. Picture taken June 23, 2014. REUTERS/Adrees Latif (UNITED STATES - Tags: HEALTH ANIMALS ENVIRONMENT AGRICULTURE BUSINESS)

Beekeeper Robert Harvey looks at blueberry blossoms which his Italian honey bee colonies were pollinating near Columbia Falls, Maine June 23, 2014. Over recent years, bees have been dying at a rate the U.S. government says is economically unsustainable. Honey bees pollinate plants that produce about a quarter of the food consumed by Americans, including apples, watermelons and beans. A lawsuit has now been filed by environmental groups in the United States seeking an injunction restricting the approval of a controversial class of pesticides known as neonicotinoids, or 'neonics'. These pesticides have become a subject of scrutiny in Europe and the U.S. as concern has mounted that they harm honeybees and other pollinators. Picture taken June 23, 2014. REUTERS/Adrees Latif (UNITED STATES - Tags: ANIMALS ENVIRONMENT BUSINESS AGRICULTURE)

Beekeeper Robert Harvey releases a barricade as he works to transfer Italian honey bee colonies pollinating a blueberry field near Columbia Falls, Maine June 23, 2014. Over recent years, bees have been dying at a rate the U.S. government says is economically unsustainable. Honey bees pollinate plants that produce about a quarter of the food consumed by Americans, including apples, watermelons and beans. A lawsuit has now been filed by environmental groups in the United States seeking an injunction restricting the approval of a controversial class of pesticides known as neonicotinoids, or 'neonics'. These pesticides have become a subject of scrutiny in Europe and the U.S. as concern has mounted that they harm honeybees and other pollinators. Picture taken June 23, 2014. REUTERS/Adrees Latif (UNITED STATES - Tags: ANIMALS ENVIRONMENT BUSINESS AGRICULTURE)

Beekeepers, or apiarists, secure a cover over bee hives stacked upon a truck as they prepare to transfer the bees to another crop after they completed pollinating a blueberry field near Columbia Falls, Maine June 23, 2014. Over recent years, bees have been dying at a rate the U.S. government says is economically unsustainable. Honey bees pollinate plants that produce about a quarter of the food consumed by Americans, including apples, watermelons and beans. A lawsuit has now been filed by environmental groups in the United States seeking an injunction restricting the approval of a controversial class of pesticides known as neonicotinoids, or 'neonics'. These pesticides have become a subject of scrutiny in Europe and the United States as concern has mounted that they harm honeybees and other pollinators. Picture taken June 23, 2014. REUTERS/Adrees Latif (UNITED STATES - Tags: BUSINESS ANIMALS ENVIRONMENT AGRICULTURE)

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David Hackenberg, 65, a beekeeper or apiarist, secures bee hives stacked upon the back of a truck as he prepares to transfer the bees to another crop after they completed pollinating a blueberry field near Jonesboro, Maine June 24, 2014. Over recent years, bees have been dying at a rate the U.S. government says is economically unsustainable. Honey bees pollinate plants that produce about a quarter of the food consumed by Americans, including apples, watermelons and beans. A lawsuit has now been filed by environmental groups in the United States seeking an injunction restricting the approval of a controversial class of pesticides known as neonicotinoids, or 'neonics'. These pesticides have become a subject of scrutiny in Europe and the United States as concern has mounted that they harm honeybees and other pollinators. Picture taken June 24, 2014. REUTERS/Adrees Latif (UNITED STATES - Tags: BUSINESS ANIMALS ENVIRONMENT AGRICULTURE)

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Beekeeper, or apiarist, David Hackenberg, 65, rests by the side of his truck at the end of the evening after transferring bee hives from a blueberry field near Columbia Falls, Maine June 22, 2014. Over recent years, bees have been dying at a rate the U.S. government says is economically unsustainable. Honey bees pollinate plants that produce about a quarter of the food consumed by Americans, including apples, watermelons and beans. A lawsuit has now been filed by environmental groups in the United States seeking an injunction restricting the approval of a controversial class of pesticides known as neonicotinoids, or 'neonics'. These pesticides have become a subject of scrutiny in Europe and the United States as concern has mounted that they harm honeybees and other pollinators. Picture taken June 22, 2014. REUTERS/Adrees Latif (UNITED STATES - Tags: BUSINESS ANIMALS ENVIRONMENT AGRICULTURE)

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Beekeepers secure a cover over bee hives stacked on a truck as they prepare to transfer the bees to another crop after they completed pollinating a blueberry field near Columbia Falls, Maine June 23, 2014. Over recent years, bees have been dying at a rate the U.S. government says is economically unsustainable. Honey bees pollinate plants that produce about a quarter of the food consumed by Americans, including apples, watermelons and beans. A lawsuit has now been filed by environmental groups in the United States seeking an injunction restricting the approval of a controversial class of pesticides known as neonicotinoids, or 'neonics'. These pesticides have become a subject of scrutiny in Europe and the United States as concern has mounted that they harm honeybees and other pollinators. Picture taken June 23, 2014. REUTERS/Adrees Latif (UNITED STATES - Tags: HEALTH ANIMALS ENVIRONMENT AGRICULTURE BUSINESS)

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A colony of Italian worker bees congregate outside their hive while pollinating a blueberry field near Columbia Falls, Maine June 22, 2014. Over recent years, bees have been dying at a rate the U.S. government says is economically unsustainable. Honey bees pollinate plants that produce about a quarter of the food consumed by Americans, including apples, watermelons and beans. A lawsuit has now been filed by environmental groups in the United States seeking an injunction restricting the approval of a controversial class of pesticides known as neonicotinoids, or 'neonics'. These pesticides have become a subject of scrutiny in Europe and the United States as concern has mounted that they harm honeybees and other pollinators. Picture taken June 22, 2014. REUTERS/Adrees Latif (UNITED STATES - Tags: BUSINESS ANIMALS ENVIRONMENT AGRICULTURE)

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A beekeeper uses a lift to stack beehives onto a truck before transferring the bees to another crop after they pollinated a blueberry field near Columbia Falls, Maine June 23, 2014. Over recent years, bees have been dying at a rate the U.S. government says is economically unsustainable. Honey bees pollinate plants that produce about a quarter of the food consumed by Americans, including apples, watermelons and beans. A lawsuit has now been filed by environmental groups in the United States seeking an injunction restricting the approval of a controversial class of pesticides known as neonicotinoids, or 'neonics'. These pesticides have become a subject of scrutiny in Europe and the United States as concern has mounted that they harm honeybees and other pollinators. Picture taken June 23, 2014. REUTERS/Adrees Latif (UNITED STATES - Tags: BUSINESS ANIMALS ENVIRONMENT AGRICULTURE)

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Beekeepers use a bee smoker to calm bee colonies before transferring them to another crop after pollinating a blueberry field near Columbia Falls, Maine June 23, 2014. Over recent years, bees have been dying at a rate the U.S. government says is economically unsustainable. Honey bees pollinate plants that produce about a quarter of the food consumed by Americans, including apples, watermelons and beans. A lawsuit has now been filed by environmental groups in the United States seeking an injunction restricting the approval of a controversial class of pesticides known as neonicotinoids, or 'neonics'. These pesticides have become a subject of scrutiny in Europe and the United States as concern has mounted that they harm honeybees and other pollinators. Picture taken June 23, 2014. REUTERS/Adrees Latif (UNITED STATES - Tags: BUSINESS ANIMALS ENVIRONMENT AGRICULTURE)

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Beekeepers are seen atop a truck as they secure a cover over bee hives before transferring the bees to another crop after they completed pollinating a blueberry field near Columbia Falls, Maine June 23, 2014. Over recent years, bees have been dying at a rate the U.S. government says is economically unsustainable. Honey bees pollinate plants that produce about a quarter of the food consumed by Americans, including apples, watermelons and beans. A lawsuit has now been filed by environmental groups in the United States seeking an injunction restricting the approval of a controversial class of pesticides known as neonicotinoids, or 'neonics'. These pesticides have become a subject of scrutiny in Europe and the United States as concern has mounted that they harm honeybees and other pollinators. Picture taken June 23, 2014. REUTERS/Adrees Latif (UNITED STATES - Tags: BUSINESS ANIMALS ENVIRONMENT AGRICULTURE TPX IMAGES OF THE DAY)

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Italian honey bees hover around the suit of beekeeper Robert Harvey as he transfers bee colonies from a blueberry field near Columbia Falls, Maine June 23, 2014. Over recent years, bees have been dying at a rate the U.S. government says is economically unsustainable. Honey bees pollinate plants that produce about a quarter of the food consumed by Americans, including apples, watermelons and beans. A lawsuit has now been filed by environmental groups in the United States seeking an injunction restricting the approval of a controversial class of pesticides known as neonicotinoids, or 'neonics'. These pesticides have become a subject of scrutiny in Europe and the United States as concern has mounted that they harm honeybees and other pollinators. Picture taken June 23, 2014. REUTERS/Adrees Latif (UNITED STATES - Tags: BUSINESS ANIMALS ENVIRONMENT AGRICULTURE)

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Beekeepers use a bee smoker to calm colonies before transferring them to another crop after pollinating a blueberry field near Columbia Falls, Maine June 23, 2014. Over recent years, bees have been dying at a rate the U.S. government says is economically unsustainable. Honey bees pollinate plants that produce about a quarter of the food consumed by Americans, including apples, watermelons and beans. A lawsuit has now been filed by environmental groups in the United States seeking an injunction restricting the approval of a controversial class of pesticides known as neonicotinoids, or 'neonics'. These pesticides have become a subject of scrutiny in Europe and the United States as concern has mounted that they harm honeybees and other pollinators. Picture taken June 23, 2014. REUTERS/Adrees Latif (UNITED STATES - Tags: BUSINESS ANIMALS ENVIRONMENT AGRICULTURE)

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A honey bee, which beekeepers said was an Italian honey bee mixed with an Africanized honey bee, flies near the headlamp of a truck transferring bee colonies to pollinate crops in Columbia Falls, Maine June 22, 2014. Over recent years, bees have been dying at a rate the U.S. government says is economically unsustainable. Honey bees pollinate plants that produce about a quarter of the food consumed by Americans, including apples, watermelons and beans. A lawsuit has now been filed by environmental groups in the United States seeking an injunction restricting the approval of a controversial class of pesticides known as neonicotinoids, or 'neonics'. These pesticides have become a subject of scrutiny in Europe and the United States as concern has mounted that they harm honeybees and other pollinators. Picture taken June 22, 2014. REUTERS/Adrees Latif (UNITED STATES - Tags: BUSINESS ANIMALS ENVIRONMENT AGRICULTURE)

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Beekeeper Robert Harvey transfers Italian honey bee colonies pollinating a blueberry field near Columbia Falls, Maine June 23, 2014. Over recent years, bees have been dying at a rate the U.S. government says is economically unsustainable. Honey bees pollinate plants that produce about a quarter of the food consumed by Americans, including apples, watermelons and beans. A lawsuit has now been filed by environmental groups in the United States seeking an injunction restricting the approval of a controversial class of pesticides known as neonicotinoids, or 'neonics'. These pesticides have become a subject of scrutiny in Europe and the United States as concern has mounted that they harm honeybees and other pollinators. Picture taken June 23, 2014. REUTERS/Adrees Latif (UNITED STATES - Tags: BUSINESS ANIMALS ENVIRONMENT AGRICULTURE TPX IMAGES OF THE DAY)

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A beekeeper, or apiarist, moves beehives onto a truck to be transferred to another crop after they completed pollinating a blueberry field near Jonesboro, Maine, June 24, 2014. Over recent years, bees have been dying at a rate the U.S. government says is economically unsustainable. Honey bees pollinate plants that produce about a quarter of the food consumed by Americans, including apples, watermelons and beans. A lawsuit has now been filed by environmental groups in the United States seeking an injunction restricting the approval of a controversial class of pesticides known as neonicotinoids, or 'neonics'. These pesticides have become a subject of scrutiny in Europe and the U.S. as concern has mounted that they harm honeybees and other pollinators. Picture taken June 24, 2014. REUTERS/Adrees Latif (UNITED STATES - Tags: ANIMALS AGRICULTURE BUSINESS ENVIRONMENT)

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Beekeeper Robert Harvey transfers Italian honey bee colonies from a blueberry field to pollinate crops in different fields near Columbia Falls, Maine June 23, 2014. Over recent years, bees have been dying at a rate the U.S. government says is economically unsustainable. Honey bees pollinate plants that produce about a quarter of the food consumed by Americans, including apples, watermelons and beans. A lawsuit has now been filed by environmental groups in the United States seeking an injunction restricting the approval of a controversial class of pesticides known as neonicotinoids, or 'neonics'. These pesticides have become a subject of scrutiny in Europe and the U.S. as concern has mounted that they harm honeybees and other pollinators. Picture taken June 23, 2014. REUTERS/Adrees Latif (UNITED STATES - Tags: BUSINESS ANIMALS ENVIRONMENT TPX IMAGES OF THE DAY AGRICULTURE)

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Beekeeper Robert Harvey transfers Italian honey bee colonies that were pollinating a blueberry field to another crop near Columbia Falls, Maine June 22, 2014. Over recent years, bees have been dying at a rate the U.S. government says is economically unsustainable. Honey bees pollinate plants that produce about a quarter of the food consumed by Americans, including apples, watermelons and beans. A lawsuit has now been filed by environmental groups in the United States seeking an injunction restricting the approval of a controversial class of pesticides known as neonicotinoids, or 'neonics'. These pesticides have become a subject of scrutiny in Europe and the United States as concern has mounted that they harm honeybees and other pollinators. Picture taken June 22, 2014. REUTERS/Adrees Latif (UNITED STATES - Tags: BUSINESS ANIMALS ENVIRONMENT AGRICULTURE TPX IMAGES OF THE DAY)

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Robert Harvey, a beekeeper or apiarist, is illuminated by lights from machinery as he transfers Italian honey bee colonies to fields of crops for pollination, near Columbia Falls, Maine June 23, 2014. Over recent years, bees have been dying at a rate the U.S. government says is economically unsustainable. Honey bees pollinate plants that produce about a quarter of the food consumed by Americans, including apples, watermelons and beans. A lawsuit has now been filed by environmental groups in the United States seeking an injunction restricting the approval of a controversial class of pesticides known as neonicotinoids, or 'neonics'. These pesticides have become a subject of scrutiny in Europe and the U.S. as concern has mounted that they harm honeybees and other pollinators. Picture taken June 23, 2014. REUTERS/Adrees Latif (UNITED STATES - Tags: HEALTH ANIMALS ENVIRONMENT BUSINESS AGRICULTURE)

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Beekeeper Robert Harvey crosses over a barricade as he works to transfer Italian honey bee colonies pollinating a blueberry field near Columbia Falls, Maine June 23, 2014. Over recent years, bees have been dying at a rate the U.S. government says is economically unsustainable. Honey bees pollinate plants that produce about a quarter of the food consumed by Americans, including apples, watermelons and beans. A lawsuit has now been filed by environmental groups in the United States seeking an injunction restricting the approval of a controversial class of pesticides known as neonicotinoids, or 'neonics'. These pesticides have become a subject of scrutiny in Europe and the U.S. as concern has mounted that they harm honeybees and other pollinators. Picture taken June 23, 2014. REUTERS/Adrees Latif (UNITED STATES - Tags: ANIMALS ENVIRONMENT BUSINESS TPX IMAGES OF THE DAY AGRICULTURE)

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A butterfly takes off in the Pollinator Garden at the Natural History Museum in Los Angeles, California March 20, 2014. Spring officially began on Thursday in the northern hemisphere, and is known as both the spring or vernal equinox. REUTERS/Lucy Nicholson (UNITED STATES - Tags: SOCIETY TRAVEL ENVIRONMENT ANIMALS)

Fifteen-month-old Amelia Tompkins plays in the Pollinator Garden at the Natural History Museum in Los Angeles, California March 20, 2014. Spring officially began on Thursday in the northern hemisphere, and is known as both the spring or vernal equinox. REUTERS/Lucy Nicholson (UNITED STATES - Tags: SOCIETY TRAVEL ENVIRONMENT)

Fifteen-month-old Amelia Tompkins plays in the Pollinator Garden at the Natural History Museum in Los Angeles, California March 20, 2014. Spring officially began on Thursday in the northern hemisphere, and is known as both the spring or vernal equinox. REUTERS/Lucy Nicholson (UNITED STATES - Tags: SOCIETY TRAVEL ENVIRONMENT)

A girl walks in the Pollinator Garden at the Natural History Museum in Los Angeles, California March 20, 2014. Spring officially began on Thursday in the northern hemisphere, and is known as both the spring or vernal equinox. REUTERS/Lucy Nicholson (UNITED STATES - Tags: SOCIETY TRAVEL ENVIRONMENT)

Children play in the Pollinator Garden at the Natural History Museum in Los Angeles, California March 20, 2014. Spring officially began on Thursday in the northern hemisphere, and is known as both the spring or vernal equinox. REUTERS/Lucy Nicholson (UNITED STATES - Tags: SOCIETY TRAVEL ENVIRONMENT)

A boy plays in the Pollinator Garden at the Natural History Museum in Los Angeles, California March 20, 2014. Spring officially began on Thursday in the northern hemisphere, and is known as both the spring or vernal equinox. REUTERS/Lucy Nicholson (UNITED STATES - Tags: SOCIETY TRAVEL ENVIRONMENT)

A Papaver commutatum 'Ladybird' plant is seen during media day at the Chelsea Flower Show in London May 20, 2013. The annual show opens to the public on Tuesday. REUTERS/Stefan Wermuth (BRITAIN - Tags: ENTERTAINMENT ENVIRONMENT SOCIETY TPX IMAGES OF THE DAY)

A bee is covered with pollen as it approaches a dandelion blossom on a lawn in Klosterneuburg April 29, 2013. The European Commission said on Monday it would go ahead and impose a temporary ban on three of the world's most widely used pesticides because of fears they harm bees, despite EU governments failing to agree on the issue. In a vote on Monday, EU officials could not decide whether to impose a two-year ban - with some exceptions - on a class of pesticides known as neonicotinoids, produced mainly by Germany's Bayer and Switzerland's Syngenta. The Commission proposed the ban in January after EU scientists said the chemicals posed an acute risk to honeybees, which pollinate many of the crops grown commercially in Europe. RREUTERS/Heinz-Peter Bader (AUSTRIA - Tags: AGRICULTURE ANIMALS ENVIRONMENT)

A bee collects pollen from a dandelion blossom on a lawn in Klosterneuburg April 29, 2013. The European Commission said on Monday it would go ahead and impose a temporary ban on three of the world's most widely used pesticides because of fears they harm bees, despite EU governments failing to agree on the issue. In a vote on Monday, EU officials could not decide whether to impose a two-year ban - with some exceptions - on a class of pesticides known as neonicotinoids, produced mainly by Germany's Bayer and Switzerland's Syngenta. The Commission proposed the ban in January after EU scientists said the chemicals posed an acute risk to honeybees, which pollinate many of the crops grown commercially in Europe. R REUTERS/Heinz-Peter Bader (AUSTRIA - Tags: AGRICULTURE ANIMALS ENVIRONMENT)