Nancy Gagnon rides the Canadian tourist boat Hornblower, limited under Ontario's rules to just six passengers amid the spread of the coronavirus disease (COVID-19), as the American boat, Maid of the Mist, glides in the background at 50 % occupancy, in Niagara Falls, Ontario, Canada July 21, 2020. REUTERS/Carlos Osorio

The American tourist boat Maid Of The Mist, limited to 50 % occupancy under New York state's rules amid the spread of the coronavirus disease (COVID-19), is seen in Niagara Falls, Ontario, Canada July 21, 2020. REUTERS/Carlos Osorio

The American tourist boat Maid Of The Mist, limited to 50 % occupancy under New York state's rules amid the spread of the coronavirus disease (COVID-19), is seen in Niagara Falls, Ontario, Canada July 21, 2020. REUTERS/Carlos Osorio

The American tourist boat Maid Of The Mist, limited to 50 % occupancy under New York state's rules amid the spread of the coronavirus disease (COVID-19), is seen in Niagara Falls, Ontario, Canada July 21, 2020. REUTERS/Carlos Osorio

The American tourist boat Maid Of The Mist, limited to 50 % occupancy under New York state's rules amid the spread of the coronavirus disease (COVID-19), is seen in Niagara Falls, Ontario, Canada July 21, 2020. REUTERS/Carlos Osorio

American tourist boat Maid Of The Mist, limited to 50% occupancy under New York state's rules amid the spread of the coronavirus disease (COVID-19), glides past a Canadian vessel limited under Ontario's rules to just six passengers, in Niagara Falls, Ontario, Canada July 21, 2020. REUTERS/Carlos Osorio TPX IMAGES OF THE DAY

Eran Druker from Israeli company RD Pack gestures while demonstrating inside a special tunnel which enables football players arriving for matches to be sprayed with a fine disinfectant mist to help prevent the spread of the coronavirus disease (COVID-19), at Bloomfield Stadium in Tel Aviv, Israel June 3, 2020. REUTERS/Amir Cohen

Doctor Izaak Cohen from Bar Ilan University gestures while speaking inside a special tunnel which enables football players arriving for their matches to be sprayed with a fine disinfectant mist to prevent the spread of the coronavirus disease (COVID-19), at Bloomfield Stadium in Tel Aviv, Israel June 3, 2020. REUTERS/Amir Cohen

Eran Druker from Israeli company RD Pack demonstrates inside a special tunnel which enables football players arriving for matches to be sprayed with a fine disinfectant mist to help prevent the spread of the coronavirus disease (COVID-19), at Bloomfield Stadium in Tel Aviv, Israel June 3, 2020. REUTERS/Amir Cohen

Eran Druker from Israeli company RD Pack gestures while demonstrating inside a special tunnel which enables football players arriving for matches to be sprayed with a fine disinfectant mist to help prevent the spread of the coronavirus disease (COVID-19), at Bloomfield Stadium in Tel Aviv, Israel June 3, 2020. REUTERS/Amir Cohen

A man wearing a face mask uses a disinfection booth that mists ethyl alcohol to contain the spread of coronavirus disease (COVID-19) in Quezon City, Metro Manila, Philippines, March 20, 2020. REUTERS/Eloisa Lopez

A man wearing a face mask uses a disinfection booth that mists ethyl alcohol to contain the spread of coronavirus disease (COVID-19) in Quezon City, Metro Manila, Philippines, March 20, 2020. REUTERS/Eloisa Lopez

A man wearing a face mask steps inside a disinfection booth that mists ethyl alcohol to contain the spread of coronavirus disease (COVID-19) in Quezon City, Metro Manila, Philippines, March 20, 2020. REUTERS/Eloisa Lopez

A demonstrator runs through mist from a police water jet during a protest against Chile's government in Santiago, Chile March 6, 2020. REUTERS/Pablo Sanhueza

A general view of boats amid dense fog and mist in the background during morning hours at China Creek area in Karachi, Pakistan January 17, 2020. REUTERS/Akhtar Soomro

A navy vessel sits in the misting rain in front of the burning Eden Woodchip Mill in Eden, Australia January 6, 2020. REUTERS/Tracey Nearmy

Royal Australian Navy vessel HMAS Adelaide (L01) seen in the misting rain off the coast in Eden, Australia January 6, 2020. REUTERS/Tracey Nearmy

Deer are seen grazing as cyclists ride past in the early morning mist in Richmond Park, west London, Britain, December 30, 2019. REUTERS/Toby Melville TPX IMAGES OF THE DAY

Deer are seen in the early morning mist in Richmond Park, west London, Britain, December 30, 2019. REUTERS/Toby Melville

A deer is seen in the early morning mist in Richmond Park, west London, Britain, December 30, 2019. REUTERS/Toby Melville

A deer is seen in the early morning mist in Richmond Park, west London, Britain, December 30, 2019. REUTERS/Toby Melville

A deer is seen in the early morning mist in Richmond Park, west London, Britain, December 30, 2019. REUTERS/Toby Melville

Deer are seen grazing as horses are ridden past in the early morning mist in Richmond Park, west London, Britain, December 30, 2019. REUTERS/Toby Melville

Deer are seen grazing as cyclists ride past in the early morning mist in Richmond Park, west London, Britain, December 30, 2019. REUTERS/Toby Melville

Deer are seen grazing as horses are ridden past in the early morning mist in Richmond Park, west London, Britain, December 30, 2019. REUTERS/Toby Melville

A demonstrator runs through a mist from a water cannon during a protest against Chile's government in Santiago, Chile, December 21, 2019. REUTERS/Ricardo Moraes

A demonstrator runs through a mist from a riot police water cannon during a protest against Chile's government in Santiago, Chile December 18, 2019. REUTERS/Ricardo Moraes TPX IMAGES OF THE DAY

A demonstrator gestures amid a mist from a water cannon sprayed by riot police during clashes at a protest against Chile's government in Santiago, Chile December 18, 2019. REUTERS/Andres Martinez Casares

A demonstrator gestures amid a mist from a water cannon sprayed by riot police during clashes at a protest against Chile's government in Santiago, Chile December 18, 2019. REUTERS/Andres Martinez Casares

Mist travels through a slum in Barquisimeto, Venezuela, August 15, 2019. REUTERS/Carlos Garcia Rawlins SEARCH "VENEZUELA MALNUTRITION" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

The U.S. Capitol dome is shrouded in early-morning mist on another day of the continued impeachment inquiry hearings into President Donald Trump's dealings with Ukraine on Capitol Hill in Washington, U.S., December 9, 2019. REUTERS/Loren Elliott

The U.S. Capitol dome is shrouded in early-morning mist on another day of the continued impeachment inquiry hearings into President Donald Trump's dealings with Ukraine on Capitol Hill in Washington, U.S., December 9, 2019. REUTERS/Loren Elliott

The U.S. Capitol dome is shrouded in early-morning mist on another day of the continued impeachment inquiry hearings into President Donald Trump's dealings with Ukraine on Capitol Hill in Washington, U.S., December 9, 2019. REUTERS/Loren Elliott

The U.S. Capitol dome is shrouded in early-morning mist on another day of the continued impeachment inquiry hearings into President Donald Trump's dealings with Ukraine on Capitol Hill in Washington, U.S., December 9, 2019. REUTERS/Loren Elliott TPX IMAGES OF THE DAY

The U.S. Capitol dome is shrouded in early-morning mist on another day of continued impeachment inquiry hearings into U.S. President Donald Trump’s dealings with Ukraine, in Washington, U.S. December 9, 2019. REUTERS/Jonathan Ernst

The U.S. Capitol dome is shrouded in early-morning mist on another day of continued impeachment inquiry hearings into U.S. President Donald Trump’s dealings with Ukraine, in Washington, U.S. December 9, 2019. REUTERS/Jonathan Ernst

The U.S. Capitol dome is shrouded in early-morning mist on another day of continued impeachment inquiry hearings into U.S. President Donald Trump’s dealings with Ukraine, in Washington, U.S. December 9, 2019. REUTERS/Jonathan Ernst

The U.S. Capitol dome is shrouded in early-morning mist on another day of continued impeachment inquiry hearings into U.S. President Donald Trump’s dealings with Ukraine, in Washington, U.S. December 9, 2019. REUTERS/Jonathan Ernst

A man is doused with milk and sprayed with mist after being hit by an eye irritant from security forces in Ferguson, Missouri, U.S., August 20, 2014. Picture taken August 20, 2014. REUTERS/Adrees Latif/File Photo SEARCH "POY DECADE" FOR THIS STORY. SEARCH "REUTERS POY" FOR ALL BEST OF 2019 PACKAGES. TPX IMAGES OF THE DAY.

Snow lies on a deck chair in a garden near the village of Seefeld, Austria, November 14, 2019 REUTERS/Angelika Warmuth

A fisherman is seen during a rainy day at the Rodrigo de Freitas lagoon in Rio de Janeiro, Brazil November 11, 2019. REUTERS/Sergio Moraes

A fisherman is seen during a rainy day at the Rodrigo de Freitas lagoon in Rio de Janeiro, Brazil November 11, 2019. REUTERS/Sergio Moraes

Men fish from the shore in Beirut, Lebanon November 9, 2019. REUTERS/Andres Martinez Casares

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

Waves crash against a lighthouse during a windy day in Boulogne-sur-Mer, France, 2 November, 2019. REUTERS/Pascal Rossignol

Waves crash against a lighthouse during a windy day in Boulogne-sur-Mer, France, 2 November, 2019. REUTERS/Pascal Rossignol

Waves crash against a lighthouse during a windy day in Boulogne-sur-Mer, France, 2 November, 2019. REUTERS/Pascal Rossignol

Waves crash against a lighthouse during a windy day in Boulogne-sur-Mer, France, 2 November, 2019. REUTERS/Pascal Rossignol

Frozen White Sea is seen outside the town of Kandalaksha in Murmansk region, Russia October 31, 2019. REUTERS/Maxim Shemetov

Birds fly next to electricity pylons on a smoggy afternoon in the old quarters of Delhi, India, October 30, 2019. REUTERS/Adnan Abidi

Birds fly next to electricity pylons on a smoggy afternoon in the old quarters of Delhi, India, October 30, 2019. REUTERS/Adnan Abidi TPX IMAGES OF THE DAY

A man carrying a basket walks along the paddy fields early in the morning in Bhaktapur, Nepal, October 27, 2019. REUTERS/Monika Deupala

Autumnal foliage is reflected on Loch Faskally, Pitlochry, Scotland, Britain October 26, 2019. REUTERS/Russell Cheyne

Mist clears away on a sunny autumn day in the Valley de Joux near Le Chenit, Switzerland, October 23, 2019. REUTERS/Denis Balibouse

Mist clears away on a sunny autumn day in the Valley de Joux near Le Chenit, Switzerland, October 23, 2019. REUTERS/Denis Balibouse TPX IMAGES OF THE DAY

Olive trees stand in a grove in Porcuna, southern Spain October 15, 2019. Picture taken October 15, 2019. REUTERS/Marcelo del Pozo

A train drives across the bed of a drained area of the Sasyk-Sivash lake used for the production of salt near the city of Yevpatoria, Crimea, October 12, 2019. Picture taken October 12, 2019. REUTERS/Alexey Pavlishak TPX IMAGES OF THE DAY

Fog rises over a village in the mountainous district of Haraz, around 90 kilometers southwest of Sanaa, Yemen October 2, 2019. Picture taken October 2, 2019. REUTERS/Khaled Abdullah

A village is shrouded by fog in the mountainous district of Haraz, around 90 kilometers southwest of Sanaa, Yemen October 2, 2019. Picture taken October 2, 2019. REUTERS/Khaled Abdullah

Fog rises above a village in the mountainous district of Haraz, around 90 kilometers southwest of Sanaa, Yemen October 2, 2019. Picture taken October 2, 2019. REUTERS/Khaled Abdullah