Journalists film behind water filled barriers after the opening ceremony of a temporary national security office, in Hong Kong, China July 8, 2020. REUTERS/Tyrone Siu 

Journalists film behind water filled barriers after the opening ceremony of a temporary national security office, in Hong Kong, China July 8, 2020. REUTERS/Tyrone Siu 

A journalist takes video through water filled barriers after the opening ceremony of a temporary national security office, in Hong Kong, China July 8, 2020. REUTERS/Tyrone Siu 

People walk past water filled barriers after the opening ceremony of temporary national security office, in Hong Kong, China July 8, 2020. REUTERS/Tyrone Siu 

A journalist takes video through water filled barriers after the opening ceremony of temporary national security office, in Hong Kong, China July 8, 2020. REUTERS/Tyrone Siu 

A police officer walks past water filled barriers after the opening ceremony of a temporary national security office, in Hong Kong, China July 8, 2020. REUTERS/Tyrone Siu TPX IMAGES OF THE DAY 

Workers move water filled barriers outside the Metropark Hotel Causeway Bay Hong Kong, believed to be used by the temporary national security office, at midnight, in Hong Kong, China July 8, 2020. REUTERS/Tyrone Siu 

Water filled barriers are seen surrounding the Metropark Hotel Causeway Bay Hong Kong, believed to be used by the temporary national security office, as workers place a national emblem at midnight, in Hong Kong, China July 8, 2020. REUTERS/Tyrone Siu 

A view shows a barrier during recovery works following an oil spill on the River Grachyovka in Butakovsky inlet of the Khimki water reservoir in Moscow Region, Russia June 30, 2020. REUTERS/Evgenia Novozhenina 

Ducks swim in a pond, during a countrywide lockdown to combat the spread of the coronavirus disease (COVID-19), in the village of Houla, southern Lebanon April 13, 2020. REUTERS/Aziz Taher 

A padlock attached to a fence is seen at sunrise in Tenby as the spread of the coronavirus disease (COVID-19) continues, Tenby, Wales, Britain, April 6, 2020. REUTERS/Rebecca Naden 

People sit on both sides of fences set up by Swiss and German authorities on the German-Swiss border as a protection measure due to the spread of the coronavirus disease (COVID-19), in an park on the banks of Lake Constance in Kreuzlingen, Switzerland April 5, 2020. Reuters/Arnd Wiegmann 

Barriers block the beach after Los Angeles County ordered parks and beaches closed to prevent the spread of coronavirus disease (COVID-19) and encourage social distancing in Redondo Beach, California, U.S., March 28, 2020. REUTERS/Patrick T. Fallon 

Barriers block the beach after Los Angeles County ordered parks and beaches closed to prevent the spread of coronavirus disease (COVID-19) and encourage social distancing in Redondo Beach, California, U.S., March 28, 2020. REUTERS/Patrick T. Fallon 

An empty pier is seen during a partial lockdown at lake Starnberg, Germany, March 22, 2020, as the spread of the coronavirus disease (COVID-19) continues. REUTERS/Andreas Gebert 

People look out to sea in Blackpool as the number of coronavirus cases grow around the world, in Blackpool, Britain, March 17, 2020. REUTERS/Carl Recine 

A man wears a surgical mask walking past water filled barriers, outside the Legislative Council, following the outbreak of the new coronavirus, in Hong Kong, China February 26, 2020. REUTERS/Tyrone Siu 

Demolished part of Hasankeyf village and a wall constructed as part of the Ilisu Dam project are seen in southeastern Batman province, Turkey, February 20, 2020. Picture taken February 20, 2020. REUTERS/Murad Sezer 

A bridge over the Tigris River which connects Hasankeyf to the other side of the river is seen nearly submerged by the waters of Ilisu Dam in Turkey, February 20, 2020. Picture taken February 20, 2020. REUTERS/Murad Sezer 

An old cemetery is seen in Hasankeyf, which will be significantly submerged by the Ilisu Dam, with new Hasankeyf in the background in southeastern Batman province, Turkey, February 20, 2020. Picture taken February 20, 2020. REUTERS/Murad Sezer 

A smoke rises from a port of Tripoli after being attacked in Tripoli, Libya February 18, 2020. REUTERS/Ahmed Elumami 

The remains of a blue flag near the rough seas at Newgale, Pembrokeshire, South Wales, Britain, February 15, 2020. REUTERS/Rebecca Naden 

Flood waters are seen near Llanrwst in North Wales, after Storm Ciara lashed through Britain, February 10, 2020. REUTERS/Jon Super 

Seagulls rest after sunset in Ohrid, North Macedonia January 14, 2020. REUTERS/Ognen Teofilovski 

Seagulls are seen in Ohrid, North Macedonia January 14, 2020. REUTERS/Ognen Teofilovski 

A general view shows deep cracks on the bottom of Studena dam near Pernik, Bulgaria, December 8, 2020. Picture taken December 8, 2020. REUTERS/Dimitar Kyosemarliev 

A general view shows Studena dam near Pernik, Bulgaria, December 8, 2020. Picture taken December 8, 2020. REUTERS/Dimitar Kyosemarliev 

Chemical plants and refineries near the Houston Ship Channel are seen next to the Manchester neighborhood in the industrial east end of Houston, Texas, U.S., August 9, 2018. REUTERS/Loren Elliott SEARCH "POLLUTION HOUSTON" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A Guajajara Indian "forest guardian" draws water from a well at a loggers camp on Arariboia indigenous land near the city of Amarante, Maranhao state, Brazil, September 11, 2019. REUTERS/Ueslei Marcelino/ File Photo SEARCH "AMAZON POY" FOR THIS STORY. SEARCH "REUTERS POY" FOR ALL BEST OF 2019 PACKAGES. TPX IMAGES OF THE DAY. 

A crow sits on a barricade in front of India Gate amidst smog in New Delhi, November 3, 2019. REUTERS/Adnan Abidi 

A water cannon vehicle is seen driving through a burning barrier during march in Hong Kong, China October 20, 2019. REUTERS/Tyrone Siu 

A fisherman rows his boat along autumnal trees during a sunny day at the Sylvenstein barrier lake, Germany October 15, 2019. REUTERS/Michael Dalder 

A fisherman rows his boat along autumnal trees during a sunny day at the Sylvenstein barrier lake, Germany October 15, 2019. REUTERS/Michael Dalder 

A fisherman rows his boat along autumnal trees during a sunny day at the Sylvenstein barrier lake, Germany October 15, 2019. REUTERS/Michael Dalder 

Police spray water across the road barrier to put out burning tyres along Airport Road in Abuja, Nigeria September 4, 2019. REUTERS/Afolabi Sotunde 

People walk along a pier during sunset in the Black Sea port of Sevastopol, Crimea August 23, 2019. REUTERS/Alexey Pavlishak 

A workman sits on a barrier as he looks at flood water blocking the A555 dual carriageway road in Manchester, Britain, August 1, 2019. REUTERS/Phil Noble 

A man walks along a seawall as he fishes at Muara Baru in Jakarta, Indonesia, July 6, 2019. REUTERS/Willy Kurniawan 

A general view shows pipes on the outside wall of a residential apartment block in Hong Kong, China, June 29, 2019. REUTERS/Thomas Peter SEARCH "YOUNG HK" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Sunrise is seen over the Rio de la Plata river in Buenos Aires, Argentina May 29, 2019. REUTERS/Agustin Marcarian TPX IMAGES OF THE DAY 

Sunrise is seen over the Rio de la Plata river in Buenos Aires, Argentina May 29, 2019. REUTERS/Agustin Marcarian 

Hay rolls damaged by flood waters lie soaked on a farm after a series of storms across the central plains in Alva, Oklahoma, U.S. May 24, 2019. Picture taken May 24, 2019. REUTERS/Gene Blevins 

Hay rolls damaged by flooding are set outside a cattle farm after a series of storms across the central plains in Buffalo, Oklahoma, U.S. May 25, 2019. REUTERS/Gene Blevins 

Coral trout are seen inside Apollo Aquaculture Group's three-tiered vertical fish farm in northern Singapore, May 4, 2019. REUTERS/Loriene Perera 

Yuichiro Kobayashi, a surfing shop owner, walks on a newly-built coastal barrier at Toyoma Beach, near Tokyo Electric Power Co's (TEPCO) tsunami-crippled Fukushima Daiichi nuclear power plant, in Iwaki, Fukushima prefecture, Japan February 19, 2019. Picture taken February 19, 2019. REUTERS/Issei Kato 

A surfer walks on a newly-built coastal barrier at Toyoma Beach, near Tokyo Electric Power Co's (TEPCO) tsunami-crippled Fukushima Daiichi nuclear power plant, in Iwaki, Fukushima prefecture, Japan February 19, 2019.Picture taken February 19, 2019. REUTERS/Issei Kato 

Wooden posts, to fight sea erosion, protude from the beach Oye-Plage beach, near Calais, France February 19, 2019. REUTERS/Benoit Tessier 

A general view of the beach in Sangatte, near Calais, France February 19, 2019. REUTERS/Benoit Tessier 

Wooden posts, to fight sea erosion, are seen on the beach in Sangatte, near Calais, France February 19, 2019. REUTERS/Benoit Tessier 

Employees of Vale SA monitor the water quality near a barrier set up on Paraopeba river to block mud after a tailings dam owned by Brazilian mining company Vale SA collapsed, in Para de Minas near Brumadinho, Brazil February 2, 2019. REUTERS/Washington Alves 

Employees of Vale SA monitor the water quality near a barrier set up on Paraopeba river to block mud after a tailings dam owned by Brazilian mining company Vale SA collapsed, in Para de Minas near Brumadinho, Brazil February 2, 2019. REUTERS/Washington Alves 

Employees of Vale SA monitor the water quality near a barrier set up on Paraopeba river to block mud after a tailings dam owned by Brazilian mining company Vale SA collapsed, in Para de Minas near Brumadinho, Brazil February 2, 2019. REUTERS/Washington Alves 

Employees of Vale SA monitor the water quality near a barrier set up on Paraopeba river to block mud after a tailings dam owned by Brazilian mining company Vale SA collapsed, in Para de Minas near Brumadinho, Brazil February 2, 2019. REUTERS/Washington Alves 

The Frauenkirche (Church of our Lady), the City Hall and the Christmas market on Marienplatz are seen behind raindrops on a fence in Munich, Germany, December 23, 2018. REUTERS/Andreas Gebert 

The Frauenkirche (Church of our Lady), the City Hall and the Christmas market on Marienplatz are seen behind raindrops on a fence in Munich, Germany, December 23, 2018. REUTERS/Andreas Gebert 

The Frauenkirche (Church of our Lady), the City Hall and the Christmas market on Marienplatz are seen behind raindrops on a fence in Munich, Germany, December 23, 2018. REUTERS/Andreas Gebert 

Vehicles drive along a bridge across the Yenisei River, with the air temperature at about minus 31 degrees Celsius (minus 23.8 degrees Fahrenheit), in the Siberian city of Krasnoyarsk, Russia December 5, 2018. REUTERS/Ilya Naymushin 

The Thames Barrier fades into early morning fog on the Thames, in London, Britain, November 27, 2019. REUTERS/Steven Watt 

Paper boats are seen placed during a protest against the seizure by Russian special forces of three of the Ukrainian navy ships, which Russia blocked from passing through the Kerch Strait into the Sea of Azov in the Black Sea, in front of the Russian embassy in Kiev, Ukraine November 25, 2018. 

Paper boats are seen placed during a protest against the seizure by Russian special forces of three of the Ukrainian navy ships, which Russia blocked from passing through the Kerch Strait into the Sea of Azov in the Black Sea, in front of the Russian embassy in Kiev, Ukraine November 25, 2018. REUTERS/Gleb Garanich