Scientist Michael Oppenheimer sits outside his family's rustic two-story farmhouse on Block Island off the coast of Rhode Island, U.S., August 6, 2019. Picture taken August 6, 2019. To match Special Report CLIMATE-CHANGE/SCIENTISTS-OPPENHEIMER REUTERS/Shannon Stapleton 

Scientist Michael Oppenheimer sits outside his family's rustic two-story farmhouse on Block Island off the coast of Rhode Island, U.S., August 6, 2019. Picture taken August 6, 2019. To match Special Report CLIMATE-CHANGE/SCIENTISTS-OPPENHEIMER REUTERS/Shannon Stapleton 

Two people walk along a gravel road amid the coronavirus disease (COVID-19) outbreak in Sabattus, Maine, U.S., April 25, 2020. REUTERS/Brian Snyder 

A view shows Strangford Lough near Newtownards, as the spread of the coronavirus disease (COVID-19) continues, in Northern Ireland, Britain, April 25, 2020. REUTERS/Jason Cairnduff 

Soy plants are seen at sunset on a farmland in Chivilcoy, on the outskirts of Buenos Aires, Argentina April 8, 2020. Picture taken April 8, 2020. REUTERS/Agustin Marcarian 

A tombstone is seen in Eyam, as the spread of the coronavirus disease (COVID-19) continues. Eyam has become known as the 'plague village' as in 1665 during the Great Plague the villagers isolated themselves from the wider community to stop the spread of the disease, Eyam, Britain, April 13, 2020. REUTERS/Carl Recine 

Cleared land is seen in preparation for a new cemetery as the coronavirus disease (COVID-19) overwhelms sanitary authorities, in Guayaquil, Ecuador April 8, 2020. REUTERS/Vicente Gaibor del Pino 

Birds fly over an empty dirt road, amid the spread of the coronavirus disease (COVID-19), in Cave Creek, Arizona, U.S., April 8, 2020. REUTERS/Nicole Neri 

Roe deers run in a field near the village of Akhanyany, Belarus, April 7, 2020. REUTERS/Vasily Fedosenko 

Ripe and rotten oranges due to the lack of workers for harvesting are seen at a farm in Lake Wales, Florida, U.S., April 1, 2020. Picture taken April 1, 2020. REUTERS/Marco Bello 

A truck filled with oranges is seen during a harvest at a farm in Lake Wales, Florida, U.S., April 1, 2020. Picture taken April 1, 2020. REUTERS/Marco Bello 

A view of a container filled with oranges and a ladder during a harvest at a farm in Lake Wales, Florida, U.S., April 1, 2020. Picture taken April 1, 2020. REUTERS/Marco Bello 

A general view of a field or oranges during a harvest at a farm in Lake Wales, Florida, U.S., April 1, 2020. Picture taken April 1, 2020. REUTERS/Marco Bello 

Seagulls fly around as a farmer ploughs a field in Liepupe, Latvia April 3, 2020. REUTERS/Ints Kalnins 

A view shows the Israel-Gaza border where 'Land Day' mass rallies planned to be held by Palestinians were cancelled amid concerns about the spread of coronavirus disease (COVID-19), east of Gaza City March 30, 2020. REUTERS/Mohammed Salem 

A view shows the Israel-Gaza border where 'Land Day' mass rallies planned to be held by Palestinians were cancelled, amid concerns about the spread of coronavirus disease (COVID-19), east of Gaza City March 30, 2020. REUTERS/Mohammed Salem 

An abandoned homestead in a corn field near Keyes, Oklahoma in the state's panhandle region which has yet to report a single case of coronavirus, in Guymon, U.S., March 26, 2020. Picture taken March 26, 2020. REUTERS/Andrew Hay 

Smoke rises from the scene of a pipeline fire outbreak at a residential area of Abule Ado in Festac town, Lagos, Nigeria March 15, 2020. REUTERS/Seun Sanni 

Greek soldiers patrol near Turkey's Pazarkule border crossing, in Kastanies, Greece March 10, 2020. REUTERS/Florion Goga 

Migrants carry stuff as they walk near Pazarkule border in Edirne, Turkey, March 6, 2020. REUTERS/Huseyin Aldemir 

An aerial view shows Har Hemed, an Israeli settlement outpost located near the settlement of Kedumim, in the northern Israeli-occupied West Bank February 25, 2020. Picture taken with a drone. REUTERS/Ilan Rosenberg 

A dog is seen near the Nueva San Jose mine where workers attend a ceremony to bless the mine by offering animal sacrifices as part of the Andean carnival celebrations, in the outskirts of Oruro, Bolivia February 21, 2020. REUTERS/David Mercado 

Storm Dennis causes flooding to the Monmouth area in South Wales, Britain February 19, 2020. REUTERS/Rebecca Naden 

A view shows the Israeli settlement of Gilo on a foggy morning in the Israeli-occupied West Bank February 17, 2020. Picture taken February 17, 2020. REUTERS/Mustafa Ganeyeh 

Flooded fields are pictured following the Storm Dennis near Carmarthen, South Wales, Britain, February 17, 2020. REUTERS/Rebecca Naden 

Flooded fields are pictured following the Storm Dennis near Carmarthen, South Wales, Britain, February 17, 2020. REUTERS/Rebecca Naden 

Flooded fields are pictured following the Storm Dennis near Carmarthen, South Wales, Britain, February 17, 2020. REUTERS/Rebecca Naden 

A view shows the Israeli settlement of Adora near Hebron in the Israeli-occupied West Bank February 12, 2020. REUTERS/Mussa Qawasma 

A general view shows the ski resort of The Mourtis, as the ski slopes are closed due to lack of snow in Boutx, France, February 10, 2020. Picture taken February 10, 2020. REUTERS/Regis Duvignau 

Snow lies on the ground at Mow Cop Folly, Mow Cop, Britain February 11, 2020. REUTERS/Carl Recine 

Snow lies on the ground at Mow Cop Folly, Mow Cop, Britain February 11, 2020. REUTERS/Carl Recine 

A view shows the Jordan Valley in the Israeli-occupied West Bank February 11, 2020. REUTERS/Ammar Awad 

Palestinian encampments are seen in Jordan Valley in the Israeli-occupied West Bank February 11, 2020. REUTERS/Ammar Awad 

Sheep graze in Jordan Valley in the Israeli-occupied West Bank February 11, 2020. REUTERS/Ammar Awad 

A section of the Israeli barrier is seen in the Arab-Israeli village of Baqa al-Gharbiyye, Israel February 1, 2020. Picture taken February 1, 2020. REUTERS/Ammar Awad 

A cow sits next to damaged houses after an earthquake in Cevrimtas, Turkey, January 27, 2020. REUTERS/Umit Bektas 

A person stands next to a damaged house, after an earthquake in Cevrimtas, Turkey, January 27, 2020. REUTERS/Umit Bektas 

A villager looks at his collapsed house after an earthquake in Sivrice near Elazig, Turkey, January 25, 2020. REUTERS/Sertac Kayar 

Riders wait for the start of the annual "Luminarias" celebration on the eve of Saint Anthony's day, Spain's patron saint of animals, in the village of San Bartolome de Pinares, northwest of Madrid, Spain, January 16, 2020. REUTERS/Juan Medina 

A rider goes through flames during the annual "Luminarias" celebration on the eve of Saint Anthony's day, Spain's patron saint of animals, in the village of San Bartolome de Pinares, northwest of Madrid, Spain, January 16, 2020. REUTERS/Juan Medina 

Riders go through flames during the annual "Luminarias" celebration on the eve of Saint Anthony's day, Spain's patron saint of animals, in the village of San Bartolome de Pinares, northwest of Madrid, Spain, January 16, 2020. REUTERS/Juan Medina 

Houses are seen in Canaan, on the outskirts of Port-au-Prince, Haiti January 10, 2020. Picture taken January 10, 2020. REUTERS/Valerie Baeriswyl 

A general view of the Mormon community in La Mora, Sonora, Mexico January 10, 2020. Picture taken on January 10, 2020. REUTERS/Carlos Jasso 

Sheep graze on a hillside on farmland near Appleby in Cumbria, Britain January 9 2020. REUTERS/Phil Noble 

A farmer tends to his sheep on a farm near Hawes in North Yorkshire, Britain January 9 2020. REUTERS/Phil Noble 

A sheep stands near a stone wall on a farm in North Yorkshire, Britain January 9 2020. REUTERS/Phil Noble 

A sheep stands near a stone wall on a farm in North Yorkshire, Britain January 9 2020. REUTERS/Phil Noble 

A country lane is seen between farmers fields near Appleby in Cumbria, Britain January 9 2020. REUTERS/Phil Noble 

Sheep feed in a field on a farm near Appleby in Cumbria, Britain January 9 2020. REUTERS/Phil Noble 

Farmers fields are seen near Appleby in Cumbria, Britain January 9 2020. REUTERS/Phil Noble 

Sheep feed in a field on a farm near Appleby in Cumbria, Britain January 9 2020. REUTERS/Phil Noble 

People walk past ice-covered trees near Albispass mountain pass, Switzerland January 2, 2020. REUTERS/Arnd Wiegmann 

Bamboo huts sit on top of concrete structures in the submerged coastal village Sitio Pariahan, Bulakan, Bulacan, north of Manila, Philippines, on November 27, 2019. REUTERS/Eloisa Lopez SEARCH "PHILIPPINES SINKING VILLAGE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES 

A partly submerged church sits amongst a dilapidated school and bamboo huts risen by stilts in the submerged coastal village Sitio Pariahan, Bulakan, Bulacan, north of Manila, Philippines, November 25, 2019. REUTERS/Eloisa Lopez SEARCH "PHILIPPINES SINKING VILLAGE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES TPX IMAGES OF THE DAY 

Windmills line a hillside in Palm Springs, California, U.S., November 29, 2019. REUTERS/Lucy Nicholson 

Windmills line a hillside in Palm Springs, California, U.S., November 29, 2019. REUTERS/Lucy Nicholson 

Clouds gather but produce no rain as cracks are seen in the dried up municipal dam in drought-stricken Graaff-Reinet, South Africa, November 14, 2019. Picture taken November 14, 2019. REUTERS/Mike Hutchings TPX IMAGES OF THE DAY 

Clouds gather but produce no rain as cracks are seen in the dried up municipal dam in drought-stricken Graaff-Reinet, South Africa, November 14, 2019. Picture taken November 14, 2019. REUTERS/Mike Hutchings 

A dead lamb lies in the veld on a farm near drought-stricken Graaff-Reinet, South Africa, November 16, 2019. Picture taken November 16, 2019. REUTERS/Mike Hutchings TPX IMAGES OF THE DAY 

Cracks are seen in the dried up municipal dam in drought-stricken Graaff-Reinet, South Africa, November 14, 2019. Picture taken November 14, 2019. REUTERS/Mike Hutchings