Glaciologists Andrea Fischer and Martin Stocker-Waldhuber, from the Austrian Academy of Sciences, inspect the ceiling of a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. Giant ice caves have appeared in glaciers accelerating the melting process faster than expected as warmer air rushes through the ice mass until it collapses. Picture taken October 15, 2021. REUTERS/Lisi Niesner

Glaciologist Andrea Fischer, from the Austrian Academy of Sciences, stands at the entrance of a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. Giant ice caves have appeared in glaciers accelerating the melting process faster than expected as warmer air rushes through the ice mass until it collapses. Picture taken October 15, 2021. REUTERS/Lisi Niesner

Glaciologist Andrea Fischer, from the Austrian Academy of Sciences, hikes towards the entrance of a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. Giant ice caves have appeared in glaciers accelerating the melting process faster than expected as warmer air rushes through the ice mass until it collapses. Picture taken October 15, 2021. REUTERS/Lisi Niesner

Glaciologists Andrea Fischer and Martin Stocker-Waldhuber, from the Austrian Academy of Sciences, inspect the entrance of a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. Giant ice caves have appeared in glaciers accelerating the melting process faster than expected as warmer air rushes through the ice mass until it collapses. Picture taken October 15, 2021. REUTERS/Lisi Niesner

Glaciologist Andrea Fischer, from the Austrian Academy of Sciences, enters a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. Giant ice caves have appeared in glaciers accelerating the melting process faster than expected as warmer air rushes through the ice mass until it collapses. Picture taken October 15, 2021. REUTERS/Lisi Niesner

Glaciologists Andrea Fischer and Martin Stocker-Waldhuber, from the Austrian Academy of Sciences, explore a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. Giant ice caves have appeared in glaciers accelerating the melting process faster than expected as warmer air rushes through the ice mass until it collapses. Picture taken October 15, 2021. REUTERS/Lisi Niesner

Glaciologist Andrea Fischer, from the Austrian Academy of Sciences, explores a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. Giant ice caves have appeared in glaciers accelerating the melting process faster than expected as warmer air rushes through the ice mass until it collapses. Picture taken October 15, 2021. REUTERS/Lisi Niesner

Glaciologists Andrea Fischer and Martin Stocker-Waldhuber, from the Austrian Academy of Sciences, hike towards the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. Giant ice caves have appeared in glaciers accelerating the melting process faster than expected as warmer air rushes through the ice mass until it collapses. Picture taken October 15, 2021. REUTERS/Lisi Niesner

Glaciologists Andrea Fischer and Martin Stocker-Waldhuber, from the Austrian Academy of Sciences, inspect a crack in the ceiling of a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. Giant ice caves have appeared in glaciers accelerating the melting process faster than expected as warmer air rushes through the ice mass until it collapses. Picture taken October 15, 2021. REUTERS/Lisi Niesner

Glaciologists Andrea Fischer and Martin Stocker-Waldhuber, from the Austrian Academy of Sciences, inspect the ceiling of a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. Giant ice caves have appeared in glaciers accelerating the melting process faster than expected as warmer air rushes through the ice mass until it collapses. Picture taken October 15, 2021. REUTERS/Lisi Niesner

Glaciologist Andrea Fischer, from the Austrian Academy of Sciences, explores a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. Giant ice caves have appeared in glaciers accelerating the melting process faster than expected as warmer air rushes through the ice mass until it collapses. Picture taken October 15, 2021. REUTERS/Lisi Niesner

A general view of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. Giant ice caves have appeared in glaciers accelerating the melting process faster than expected as warmer air rushes through the ice mass until it collapses. Picture taken October 15, 2021. REUTERS/Lisi Niesner

Glaciologist Martin Stocker-Waldhuber, from the Austrian Academy of Sciences, explores a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. Giant ice caves have appeared in glaciers accelerating the melting process faster than expected as warmer air rushes through the ice mass until it collapses. Picture taken October 15, 2021. REUTERS/Lisi Niesner

Glaciologists Andrea Fischer and Martin Stocker-Waldhuber, from the Austrian Academy of Sciences, explore a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. Giant ice caves have appeared in glaciers accelerating the melting process faster than expected as warmer air rushes through the ice mass until it collapses. Picture taken October 15, 2021. REUTERS/Lisi Niesner

Glaciologists Andrea Fischer and Martin Stocker-Waldhuber, from the Austrian Academy of Sciences, inspect the entrance of a natural glacier cavity of Jamtalferner glacier near Galtuer, Austria, October 15, 2021. Giant ice caves have appeared in glaciers accelerating the melting process faster than expected as warmer air rushes through the ice mass until it collapses. Picture taken October 15, 2021. REUTERS/Lisi Niesner

Glaciologists Andrea Fischer and Martin Stocker-Waldhuber, from the Austrian Academy of Sciences, explore a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. Giant ice caves have appeared in glaciers accelerating the melting process faster than expected as warmer air rushes through the ice mass until it collapses. Picture taken October 15, 2021. REUTERS/Lisi Niesner

Glaciologist Martin Stocker-Waldhuber, from the Austrian Academy of Sciences, explores a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. Giant ice caves have appeared in glaciers accelerating the melting process faster than expected as warmer air rushes through the ice mass until it collapses. Picture taken October 15, 2021. REUTERS/Lisi Niesner

Glaciologist Andrea Fischer, from the Austrian Academy of Sciences, explores a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. Giant ice caves have appeared in glaciers accelerating the melting process faster than expected as warmer air rushes through the ice mass until it collapses. Picture taken October 15, 2021. REUTERS/Lisi Niesner TPX IMAGES OF THE DAY

Glaciologist Andrea Fischer, from the Austrian Academy of Sciences, inspects a piece of ice inside a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. Giant ice caves have appeared in glaciers accelerating the melting process faster than expected as warmer air rushes through the ice mass until it collapses. Picture taken October 15, 2021. REUTERS/Lisi Niesner

Glaciologists Andrea Fischer and Martin Stocker-Waldhuber, from the Austrian Academy of Sciences, inspect the entrance of a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. Giant ice caves have appeared in glaciers accelerating the melting process faster than expected as warmer air rushes through the ice mass until it collapses. Picture taken October 15, 2021. REUTERS/Lisi Niesner

A runner collapses in celebration after finishing the 125th Boston Marathon in Boston, Massachusetts, U.S., October 11, 2021. REUTERS/Reba Saldanha

Collapsed bamboo scaffolds of a residential building are seen as Typhoon Lionrock hits Hong Kong, China October 8, 2021. REUTERS/Lam Yik

Collapsed bamboo scaffolds of a residential building are seen as Typhoon Lionrock hits Hong Kong, China October 8, 2021. REUTERS/Lam Yik

Collapsed bamboo scaffolds of a residential building are seen as Typhoon Lionrock hits Hong Kong, China October 8, 2021. REUTERS/Lam Yik

Collapsed bamboo scaffolds of a residential building are seen as Typhoon Lionrock hits Hong Kong, China October 8, 2021. REUTERS/Lam Yik

Police officers look on standing nearby collapsed bamboo scaffolds of a residential building as Typhoon Lionrock hits Hong Kong, China October 8, 2021. REUTERS/Lam Yik

Climate activists of Extinction Rebellion sit on a street as they display a banner during a protest in the city centre of Zurich, Switzerland October 4, 2021. The banner says: "Deadline: 3 years. Act now or climate collapse." REUTERS/Arnd Wiegmann

Lawyers Pedro Martins and Jan Erik Spangenberg and prosecutors Gustavo Barroso Camara and Paulo Richardo Rocha Pinto arrive for the first civil lawsuit against TUV SUD for its role in the 2019 collapse of a dam in Brazil, in Munich, Germany, September 28, 2021. REUTERS/Michaela Rehle

Lawyers Pedro Martins and Jan Erik Spangenberg arrive for the first civil lawsuit against TUV SUD for its role in the 2019 collapse of a dam in Brazil, in Munich, Germany, September 28, 2021. REUTERS/Michaela Rehle

In-house counsel of TUV SUD Florian Stork and colleagues arrive for the first civil lawsuit against TUV SUD for its role in the 2019 collapse of a dam in Brazil, in Munich, Germany, September 28, 2021. REUTERS/Michaela Rehle

In-house counsel of TUV SUD Florian Stork and colleagues arrive for the first civil lawsuit against TUV SUD for its role in the 2019 collapse of a dam in Brazil, in Munich, Germany, September 28, 2021. REUTERS/Michaela Rehle

Jan Erik Spangenberg, lawyer of prosecutor Gustavo Barroso Camara, arrives for the first civil lawsuit against TUV SUD for its role in the 2019 collapse of a dam in Brazil, in Munich, Germany, September 28, 2021. REUTERS/Michaela Rehle

Husband of the deceased Izabella prosecutor Paulo Richardo Rocha Pinto, Mayor of Brumadinho Avimar de Melo Barcelos, and prosecutors Marcelo Barroso Camara and Gustavo Barroso Camara, brothers of Izabella, wait for the start of the first civil lawsuit against TUV SUD for its role in the 2019 collapse of a dam in Brazil, in Munich, Germany, September 28, 2021. REUTERS/Michaela Rehle

Husband of the deceased Izabella prosecutor Paulo Richardo Rocha Pinto, Mayor of Brumadinho Avimar de Melo Barcelos, and prosecutors Marcelo Barroso Camara and Gustavo Barroso Camara, brothers of Izabella, wait for the start of the first civil lawsuit against TUV SUD for its role in the 2019 collapse of a dam in Brazil, in Munich, Germany, September 28, 2021. REUTERS/Michaela Rehle

Lawyer Pedro Martins and prosecutors Marcelo Barroso Camara and Gustavo Barroso Camara, brothers of the deceased Izabella, arrive for the first civil lawsuit against TUV SUD for its role in the collapse of a dam in Brazil in 2019, in Munich, Germany, September 28, 2021. REUTERS/Michaela Rehle

Lawyer Pedro Martins and prosecutors Marcelo Barroso Camara and Gustavo Barroso Camara, brothers of the deceased Izabella, arrive for the first civil lawsuit against TUV SUD for its role in the 2019 collapse of a dam in Brazil, in Munich, Germany, September 28, 2021. REUTERS/Michaela Rehle

Prosecutors Marcelo Barroso Camara and Gustavo Barroso Camara, brothers of the deceased Izabella, arrive for the first civil lawsuit against TUV SUD for its role in the 2019 collapse of a dam in Brazil, in Munich, Germany, September 28, 2021. REUTERS/Michaela Rehle

A person collapses their umbrella as the rain stops in midtown Manhattan, New York, U.S., September 23, 2021. REUTERS/Angus Mordant

People, including members of the rescue teams, attend a mass at a site where a building collapsed, to mark the anniversary of the 1985 earthquake, in Mexico City, Mexico September 19, 2021, REUTERS/Luis Cortes

People, including members of the rescue teams, attend a mass at a site where a building collapsed, to mark the anniversary of the 1985 earthquake, in Mexico City, Mexico September 19, 2021, REUTERS/Luis Cortes

People, including members of the rescue teams, attend a mass at a site where a building collapsed, to mark the anniversary of the 1985 earthquake, in Mexico City, Mexico September 19, 2021, REUTERS/Luis Cortes

People are seen reflected in a puddle as they attend a mass at a site where a building collapsed, to mark the anniversary of the 1985 earthquake, in Mexico City, Mexico September 19, 2021, REUTERS/Luis Cortes TPX IMAGES OF THE DAY

People, including members of the rescue teams, attend a mass at a site where a building collapsed, to mark the anniversary of the 1985 earthquake, in Mexico City, Mexico September 19, 2021, REUTERS/Luis Cortes

People, including members of the rescue teams, attend a mass at a site where a building collapsed, to mark the anniversary of the 1985 earthquake, in Mexico City, Mexico September 19, 2021, REUTERS/Luis Cortes

People, including members of the rescue teams, attend a mass at a site where a building collapsed, to mark the anniversary of the 1985 earthquake, in Mexico City, Mexico September 19, 2021, REUTERS/Luis Cortes

A general view shows an under-construction bridge that collapsed in Mumbai, India September 17, 2021. REUTERS/Francis Mascarenhas

People look at an under-construction bridge that collapsed in Mumbai, India, September 17, 2021. REUTERS/Francis Mascarenhas

A general view shows an under-construction bridge that collapsed in Mumbai, India September 17, 2021. REUTERS/Francis Mascarenhas

The collapsed wall of a school is seen in the aftermath of the earthquake in Acapulco, in Guerrero state, Mexico, September 9, 2021. REUTERS/Edgard Garrido

A person walks past the collapsed wall of a school in the aftermath of the earthquake in Acapulco, in Guerrero state, Mexico, September 9, 2021. REUTERS/Edgard Garrido

A view shows the site of a deadly metro overpass accident that collapsed, after the Norwegian firm DNV delivered a final report on the causes of the collapse of the metro rail line that killed 26 people, in Mexico City, Mexico, on September 7, 2021. REUTERS/Edgard Garrido

A man rides his bicycle near the site of a deadly metro overpass accident that collapsed, after the Norwegian firm DNV delivered a final report on the causes of the collapse of the metro rail line that killed 26 people, in Mexico City, Mexico, on September 7, 2021. REUTERS/Edgard Garrido

A man walks near the site of a deadly metro overpass accident that collapsed, after the Norwegian firm DNV delivered a final report on the causes of the collapse of the metro rail line that killed 26 people, in Mexico City, Mexico, on September 7, 2021. REUTERS/Edgard Garrido

A man walks near the site of a deadly metro overpass accident that collapsed, after the Norwegian firm DNV delivered a final report on the causes of the collapse of the metro rail line that killed 26 people, in Mexico City, Mexico, on September 7, 2021. REUTERS/Edgard Garrido

A person stands on a collapsed tree after heavy rainfalls in the municipality of Ecatepec, that left two persons missing and damaged cars and infrastructure, in the outskirts of Mexico City, Mexico, September 7, 2021. REUTERS/Edgard Garrido

Workers clean up the site of the Historic Karnofsky Shop, a historic building, that collapsed during Hurricane Ida in New Orleans, Louisiana, U.S., September 6, 2021. REUTERS/Kathleen Flynn

Workers clean up the site of the Historic Karnofsky Shop, a historic building, that collapsed during Hurricane Ida in New Orleans, Louisiana, U.S., September 6, 2021. REUTERS/Kathleen Flynn

Workers clean up the site of the Historic Karnofsky Shop, a historic building, that collapsed during Hurricane Ida in New Orleans, Louisiana, U.S., September 6, 2021. REUTERS/Kathleen Flynn

Workers clean up the site of the Historic Karnofsky Shop, a historic building, that collapsed during Hurricane Ida in New Orleans, Louisiana, U.S., September 6, 2021. REUTERS/Kathleen Flynn

Workers clean up the site of the Historic Karnofsky Shop, a historic, building that collapsed during Hurricane Ida in New Orleans, Louisiana, U.S., September 6, 2021. REUTERS/Kathleen Flynn TPX IMAGES OF THE DAY