Medical radiology technicians prepares a CT scan to do a radiological examination of an Egyptian mummy in order to investigate its history at the Policlinico hospital in Milan, Italy, June 21, 2021. Picture taken June 21, 2021. REUTERS/Flavio Lo Scalzo

An Egyptian mummy undergoes a CT scan in order for researchers to investigate its history, at the Policlinico hospital in Milan, Italy, June 21, 2021. Picture taken June 21, 2021. REUTERS/Flavio Lo Scalzo

A medical radiology technician prepares a CT scan to do a radiological examination of an Egyptian mummy in order to investigate its history at the Policlinico hospital in Milan, Italy, June 21, 2021. Picture taken June 21, 2021. REUTERS/Flavio Lo Scalzo

Medical radiology technicians and researchers look at a computer screen as an Egyptian mummy undergoes a CT scan in order for researchers to investigate its history at the Policlinico hospital in Milan, Italy, June 21, 2021. Picture taken June 21, 2021. REUTERS/Flavio Lo Scalzo

Medical radiology technicians and researchers look at a computer screen as an Egyptian mummy undergoes a CT scan in order for researchers to investigate its history at the Policlinico hospital in Milan, Italy, June 21, 2021. Picture taken June 21, 2021. REUTERS/Flavio Lo Scalzo

An Egyptian mummy undergoes a CT scan in order for researchers to investigate its history, at the Policlinico hospital in Milan, Italy, June 21, 2021. Picture taken June 21, 2021. REUTERS/Flavio Lo Scalzo

An Egyptian mummy is seen next to its coffin at the Civic Archaeological Museum of Bergamo, Italy, June 21, 2021. Picture taken June 21, 2021. REUTERS/Flavio Lo Scalzo

A researcher prepares to move an Egyptian mummy from the Civic Archaeological Museum of Bergamo to Milan's Policlinico hospital to undergo a CT scan in order to investigate its history, in Bergamo, Italy, June 21, 2021. Picture taken June 21, 2021. REUTERS/Flavio Lo Scalzo

The skull of an Egyptian mummy is seen in the Civic Archaeological Museum of Bergamo, Italy, June 21, 2021. Picture taken June 21, 2021. REUTERS/Flavio Lo Scalzo

An Egyptian mummy undergoes a CT scan in order for researchers to investigate its history, at the Policlinico hospital in Milan, Italy, June 21, 2021. Picture taken June 21, 2021. REUTERS/Flavio Lo Scalzo

A researcher prepares to move an Egyptian mummy from the Civic Archaeological Museum of Bergamo to Milan's Policlinico hospital to undergo a CT scan in order to investigate its history, in Bergamo, Italy, June 21, 2021. Picture taken June 21, 2021. REUTERS/Flavio Lo Scalzo

A researcher prepares to move an Egyptian mummy from the Civic Archaeological Museum of Bergamo to Milan's Policlinico hospital to undergo a CT scan in order to investigate its history, in Bergamo, Italy, June 21, 2021. Picture taken June 21, 2021. REUTERS/Flavio Lo Scalzo

Researchers prepare to move an Egyptian mummy from the Civic Archaeological Museum of Bergamo to Milan's Policlinico hospital to undergo a CT scan in order to investigate its history, in Bergamo, Italy, June 21, 2021. Picture taken June 21, 2021. REUTERS/Flavio Lo Scalzo

Researchers prepare to move an Egyptian mummy from the Civic Archaeological Museum of Bergamo to Milan's Policlinico hospital to undergo a CT scan in order to investigate its history, in Bergamo, Italy, June 21, 2021. Picture taken June 21, 2021. REUTERS/Flavio Lo Scalzo

People make their way near the Hadrian's Library archaeological site, as the country's tourism season officially opens, in Athens, Greece May 15, 2021. REUTERS/Costas Baltas

A man stands at the entrance of the Hadrian's Library archaeological site, as the country's tourism season officially opens, in Athens, Greece May 15, 2021. REUTERS/Costas Baltas

Emmanuel Ndiema, head of archaeology at the National Museums of Kenya, talks to Reuters at a vault containing remains of a child buried around 78,000 years ago in Panga ya Saidi cave near Kenya's coast, at the National Museum of Kenya, in Nairobi, Kenya, May 12, 2021. Picture taken May 12, 2021. REUTERS/Baz Ratner

Emmanuel Ndiema, head of Archaeology at the National museums of Kenya holds boxes containing remains of a child buried around 78,000 years ago in Panga ya Saidi cave near Kenya's coast, at a vault in the National Museum of Kenya, in Nairobi, Kenya, May 12, 2021. Picture taken May 12, 2021. REUTERS/Baz Ratner

People attend a candlelight concert inside the archaeological park of Appia Antica, during the coronavirus disease (COVID-19) pandemic, in Rome, Italy, May 10, 2021. REUTERS/Yara Nardi

People attend a candlelight concert inside the archaeological park of Appia Antica, during the coronavirus disease (COVID-19) pandemic, in Rome, Italy, May 10, 2021. REUTERS/Yara Nardi

Pianist Giuseppe Califano plays during a candlelight concert inside the archaeological park of Appia Antica, during the coronavirus disease (COVID-19) pandemic, in Rome, Italy, May 10, 2021. REUTERS/Yara Nardi

Pianist Giuseppe Califano plays during a candlelight concert inside the archaeological park of Appia Antica, during the coronavirus disease (COVID-19) pandemic, in Rome, Italy, May 10, 2021. REUTERS/Yara Nardi

Pianist Giuseppe Califano plays during a candlelight concert inside the archaeological park of Appia Antica, during the coronavirus disease (COVID-19) pandemic, in Rome, Italy, May 10, 2021. REUTERS/Yara Nardi

People attend a candlelight concert inside the archaeological park of Appia Antica, during the coronavirus disease (COVID-19) pandemic, in Rome, Italy, May 10, 2021. REUTERS/Yara Nardi

People attend a candlelight concert inside the archaeological park of Appia Antica, during the coronavirus disease (COVID-19) pandemic, in Rome, Italy, May 10, 2021. REUTERS/Yara Nardi

Pianist Giuseppe Califano plays during a candlelight concert inside the archaeological park of Appia Antica, during the coronavirus disease (COVID-19) pandemic, in Rome, Italy, May 10, 2021. REUTERS/Yara Nardi

A general view of a candlelight concert inside the archaeological park of Appia Antica, during the coronavirus disease (COVID-19) pandemic, in Rome, Italy, May 10, 2021. REUTERS/Yara Nardi

People attend a candlelight concert inside the archaeological park of Appia Antica, during the coronavirus disease (COVID-19) pandemic, in Rome, Italy, May 10, 2021. REUTERS/Yara Nardi

People attend a candlelight concert inside the archaeological park of Appia Antica, during the coronavirus disease (COVID-19) pandemic, in Rome, Italy, May 10, 2021. REUTERS/Yara Nardi

People attend a candlelight concert inside the archaeological park of Appia Antica, during the coronavirus disease (COVID-19) pandemic, in Rome, Italy, May 10, 2021. REUTERS/Yara Nardi

An employee holds a bronze oil lamp, dating from the Roman Period, discovered during excavations at the City of David, a Jewish heritage site, according to Israel's Antiquities Authority, in East Jerusalem May 5, 2021. REUTERS/Ronen Zvulun

An employee holds a bronze oil lamp, dating from the Roman Period, discovered during excavations at the City of David, a Jewish heritage site, according to Israel's Antiquities Authority, in East Jerusalem May 5, 2021. REUTERS/Ronen Zvulun

An employee holds a bronze oil lamp, dating from the Roman Period, discovered during excavations at the City of David, a Jewish heritage site, according to Israel's Antiquities Authority, in East Jerusalem May 5, 2021. REUTERS/Ronen Zvulun

A bronze oil lamp, dating from the Roman Period, discovered during excavations at the City of David, a Jewish heritage site, according to Israel's Antiquities Authority, is displayed in East Jerusalem May 5, 2021. REUTERS/Ronen Zvulun

A view shows the collapsed roof that protected the "Casa de las Aguilas", part of the ruins of the Templo Mayor archaeological site, after heavy rain and hail, in downtown Mexico City, Mexico April 29, 2021. REUTERS/Carlos Jasso

A view shows the collapsed roof that protected the "Casa de las Aguilas", part of the ruins of the Templo Mayor archaeological site, after heavy rain and hail, in downtown Mexico City, Mexico April 29, 2021. REUTERS/Carlos Jasso

A view shows the collapsed roof that protected the "Casa de las Aguilas", part of the ruins of the Templo Mayor archaeological site, after heavy rain and hail, in downtown Mexico City, Mexico April 29, 2021. REUTERS/Carlos Jasso

A view shows the collapsed roof that protected the "Casa de las Aguilas", part of the ruins of the Templo Mayor archaeological site, after heavy rain and hail, in downtown Mexico City, Mexico April 29, 2021. REUTERS/Carlos Jasso

A view shows the collapsed roof that protected the "Casa de las Aguilas", part of the ruins of the Templo Mayor archaeological site, after heavy rain and hail, in downtown Mexico City, Mexico April 29, 2021. REUTERS/Carlos Jasso

A view shows the collapsed roof that protected the "Casa de las Aguilas", part of the ruins of the Templo Mayor archaeological site, after heavy rain and hail, in downtown Mexico City, Mexico April 29, 2021. REUTERS/Carlos Jasso

A view shows the collapsed roof that protected the "Casa de las Aguilas", part of the ruins of the Templo Mayor archaeological site, after heavy rain and hail, in downtown Mexico City, Mexico April 29, 2021. REUTERS/Carlos Jasso

A view shows the collapsed roof that protect the "Casa de las Aguilas", part of the ruins of the Templo Mayor archaeological site, after a heavy rain and hail, in downtown Mexico City, Mexico April 28, 2021. REUTERS/Gustavo Graf

Personnel of the Minister of Culture observe the damage of the roof protecting the "Casa de las Aguilas", part of the ruins of the Templo Mayor archaeological site, which collapsed after heavy rain and hail, in downtown Mexico City, Mexico April 28, 2021. REUTERS/Gustavo Graf

Personnel of the Minister of Culture observe the damage of the roof protecting the "Casa de las Aguilas", part of the ruins of the Templo Mayor archaeological site, which collapsed after heavy rain and hail, in downtown Mexico City, Mexico April 28, 2021. REUTERS/Gustavo Graf

A police cordon is pictured at the scene where the roof protecting the "Casa de las Aguilas", part of the ruins of the Templo Mayor archaeological site, collapsed after heavy rain and hail, in downtown Mexico City, Mexico April 28, 2021. REUTERS/Gustavo Graf

A soldier keeps watch at a scene where the roof protecting the "Casa de las Aguilas", part of the ruins of the Templo Mayor archaeological site, collapsed after heavy rain and hail, in downtown Mexico City, Mexico April 28, 2021. REUTERS/Gustavo Graf

Soldiers chat at a scene where the roof protecting the "Casa de las Aguilas", part of the ruins of the Templo Mayor archaeological site, collapsed after heavy rain and hail, in downtown Mexico City, Mexico April 28, 2021. REUTERS/Gustavo Graf

Soldiers walk by a scene where the roof protecting the "Casa de las Aguilas", part of the ruins of the Templo Mayor archaeological site, collapsed after heavy rain and hail, in downtown Mexico City, Mexico April 28, 2021. REUTERS/Gustavo Graf

Undated image shows part in the archeological site of 110 tombs at the Nile Delta, in this image released on April 27, 2021 by archaeological mission operating in the archaeological area of Dakahlia Governorate north of Cairo, via Egypt's Ministry of Antiquities. The Egyptian Ministry of Antiquities/Handout via REUTERS ATTENTION EDITORS

Undated image shows a human skeleton from a tomb at the Nile Delta, in this image released on April 27, 2021 by archaeological mission operating in the archaeological area of Dakahlia Governorate north of Cairo, via Egypt's Ministry of Antiquities. The Egyptian Ministry of Antiquities/Handout via REUTERS ATTENTION EDITORS

Tourists visit the archaeological site of the ancient Roman city of Pompeii, as it reopens to the public after much of the country became a "yellow zone", loosening coronavirus disease (COVID-19) restrictions, in Pompeii, Italy, April 27, 2021. REUTERS/Ciro De Luca

A tourist visits the archaeological site of the ancient Roman city of Pompeii, as it reopens to the public after much of the country became a "yellow zone", loosening coronavirus disease (COVID-19) restrictions, in Pompeii, Italy, April 27, 2021. REUTERS/Ciro De Luca

Tourists visit the archaeological site of the ancient Roman city of Pompeii, as it reopens to the public after much of the country became a "yellow zone", loosening coronavirus disease (COVID-19) restrictions, in Pompeii, Italy, April 27, 2021. REUTERS/Ciro De Luca

Tourists visit the archaeological site of the ancient Roman city of Pompeii, as it reopens to the public after much of the country became a "yellow zone", loosening coronavirus disease (COVID-19) restrictions, in Pompeii, Italy, April 27, 2021. REUTERS/Ciro De Luca

Tourists visit the archaeological site of the ancient Roman city of Pompeii, as it reopens to the public after much of the country became a "yellow zone", loosening coronavirus disease (COVID-19) restrictions, in Pompeii, Italy, April 27, 2021. REUTERS/Ciro De Luca

Tourists visit the archaeological site of the ancient Roman city of Pompeii, as it reopens to the public after much of the country became a "yellow zone", loosening coronavirus disease (COVID-19) restrictions, in Pompeii, Italy, April 27, 2021. REUTERS/Ciro De Luca

Tourists visit the archaeological site of the ancient Roman city of Pompeii, as it reopens to the public after much of the country became a "yellow zone", loosening coronavirus disease (COVID-19) restrictions, in Pompeii, Italy, April 27, 2021. REUTERS/Ciro De Luca

A tourist visits the archaeological site of the ancient Roman city of Pompeii, as it reopens to the public after much of the country became a "yellow zone", loosening coronavirus disease (COVID-19) restrictions, in Pompeii, Italy, April 27, 2021. REUTERS/Ciro De Luca

A tourist visits the archaeological site of the ancient Roman city of Pompeii, as it reopens to the public after much of the country became a "yellow zone", loosening coronavirus disease (COVID-19) restrictions, in Pompeii, Italy, April 27, 2021. REUTERS/Ciro De Luca

A tourist visits the archaeological site of the ancient Roman city of Pompeii, as it reopens to the public after much of the country became a "yellow zone", loosening coronavirus disease (COVID-19) restrictions, in Pompeii, Italy, April 27, 2021. REUTERS/Ciro De Luca