Swiss Interior and Health Minister Alain Berset signs the BioHub Initiative with a global COVID-19 Pathogen repository in Spiez laboratory during a bilateral meeting with World Health Organization (WHO) Director General Tedros Adhanom Ghebreyesus on the sidelines of the opening of the 74th World Health Assembly at the WHO headquarters, in Geneva, Switzerland May 24, 2021. Laurent Gillieron/Pool via REUTERS

A view shows sacks with onions at a vegetable storehouse near the settlement of Arzgir in Stavropol region, Russia, March 22, 2017. REUTERS/Eduard Korniyenko

Worker carries Parmesan wheel off storehouse shelf 4 Madonne Caseificio dell'Emilia dairy cooperative in Modena, Italy, February 16 2016. When Parmesan prices proved too volatile for Italy's strained banks a dairy cooperative near Bologna came up with a novel solution to its funding needs, bonds backed by wheels of cheese. But 4 Madonne Caseificio dell'Emilia remains an exception among small businesses struggling to get long-term funds in Italy, where a credit crunch risks holding back a fragile economic recovery after more than a decade of stagnation. REUTERS/Alessandro Bianchi

Worker carries fresh Parmesan wheel off storehouse shelf a 4 Madonne Caseificio dell'Emilia dairy cooperative in Modena, Italy, February 16, 2016. When Parmesan prices proved too volatile for Italy's strained banks a dairy cooperative near Bologna came up with a novel solution to its funding needs, bonds backed by wheels of cheese. But 4 Madonne Caseificio dell'Emilia remains an exception among small businesses struggling to get long-term funds in Italy, where a credit crunch risks holding back a fragile economic recovery after more than a decade of stagnation. REUTERS/Alessandro Bianchi TPX IMAGES OF THE DAY

Worker (C) inspects wheel of Parmesan cheese at storehouse shelf at 4 Madonne Caseificio dell'Emilia dairy cooperative in Modena, Italy, February 16, 2016. When Parmesan prices proved too volatile for Italy's strained banks a dairy cooperative near Bologna came up with a novel solution to its funding needs, bonds backed by wheels of cheese. But 4 Madonne Caseificio dell'Emilia remains an exception among small businesses struggling to get long-term funds in Italy, where a credit crunch risks holding back a fragile economic recovery after more than a decade of stagnation. REUTERS/Alessandro Bianchi

Worker inspects wheel of Parmesan cheese at storehouse shelf 4 Madonne Caseificio dell'Emilia dairy cooperative in Modena, Italy, February 16, 2016. When Parmesan prices proved too volatile for Italy's strained banks a dairy cooperative near Bologna came up with a novel solution to its funding needs, bonds backed by wheels of cheese. But 4 Madonne Caseificio dell'Emilia remains an exception among small businesses struggling to get long-term funds in Italy, where a credit crunch risks holding back a fragile economic recovery after more than a decade of stagnation. REUTERS/Alessandro Bianchi

A storage area for Parmesan cheese wheels is pictured at storehouse shelf at 4 Madonne Caseificio dell'Emilia dairy cooperative in Modena, Italy, February 16, 2016. When Parmesan prices proved too volatile for Italy's strained banks a dairy cooperative near Bologna came up with a novel solution to its funding needs, bonds backed by wheels of cheese. But 4 Madonne Caseificio dell'Emilia remains an exception among small businesses struggling to get long-term funds in Italy, where a credit crunch risks holding back a fragile economic recovery after more than a decade of stagnation. REUTERS/Alessandro Bianchi

A storage area for Parmesan cheese wheels is pictured at storehouse shelf at 4 Madonne Caseificio dell'Emilia dairy cooperative in Modena, Italy, February 16, 2016. When Parmesan prices proved too volatile for Italy's strained banks a dairy cooperative near Bologna came up with a novel solution to its funding needs, bonds backed by wheels of cheese. But 4 Madonne Caseificio dell'Emilia remains an exception among small businesses struggling to get long-term funds in Italy, where a credit crunch risks holding back a fragile economic recovery after more than a decade of stagnation. REUTERS/Alessandro Bianchi

Worker inspects wheel of Parmesan cheese at storehouse shelf 4 Madonne Caseificio dell'Emilia dairy cooperative in Modena, Italy, February 16, 2016. When Parmesan prices proved too volatile for Italy's strained banks a dairy cooperative near Bologna came up with a novel solution to its funding needs, bonds backed by wheels of cheese. But 4 Madonne Caseificio dell'Emilia remains an exception among small businesses struggling to get long-term funds in Italy, where a credit crunch risks holding back a fragile economic recovery after more than a decade of stagnation. REUTERS/Alessandro Bianchi

A worker arranges filled Liquefied Petroleum Gas (LPG) cylinders at a distribution centre at Dujana village in Noida, on the outskirts of New Delhi October 7, 2015. Liquefied Petroleum Gas, long a niche product used by the poor to cook and the rich to barbecue, has become a rare bright spot amid a broad commodities rout, riding on the wave of strong economic growth in India and parts of Southeast Asia. To match story COMMODITIES-LPG/GROWTH Picture taken October 7, 2015. REUTERS/Anindito Mukherjee

Empty Liquefied Petroleum Gas (LPG) cylinders are seen at a gas distribution centre at Dujana village in Noida, on the outskirts of New Delhi October 7, 2015. Liquefied Petroleum Gas, long a niche product used by the poor to cook and the rich to barbecue, has become a rare bright spot amid a broad commodities rout, riding on the wave of strong economic growth in India and parts of Southeast Asia. To match story COMMODITIES-LPG/GROWTH Picture taken October 7, 2015. REUTERS/Anindito Mukherjee

Workers stand outside a room used to store coffins at a community center in Santa Catarina Pinula, on the outskirts of Guatemala City, October 6, 2015. Despair in the search for dozens of people still missing after a deadly landslide swallowed part of a Guatemalan town is so deep that some relatives feel lucky simply to have found the bodies of their loved ones. Families lit candles on Sunday for relatives engulfed by a mass of earth and rubble that crashed down on a neighborhood in Santa Catarina Pinula. Rescue teams have found more than 130 bodies and up to 150 others are missing, feared dead. REUTERS/Josue Decavele

Film equipment contractor chief Mauricio Martinez inspects a digital film camera at their storehouse in Santiago, Chile, August 25, 2015. When the creators of an elaborate 2013 Cadillac commercial began to scout for shooting locations three years ago, they began in Argentina, where varied landscapes and creative talent had long attracted ad producers. But when it came time to import the equipment needed for the three-minute spot, they collided head-on with the country's byzantine import regulations. Argentina demanded hefty deposits on all vehicles, cameras, and lights, and producers were unsure when - or even if - their imports would make it through customs. The solution? Move to Chile. Picture taken August 25, 2015. REUTERS/Ivan Alvarado

Dry clover is stored near the village of Lianokladi, Greece July 27, 2015. A rising number of Greeks in rural areas are swapping goods and services in cashless transactions since the government shut down banks on June 28 for three weeks, restricted cash withdrawals and banned transfers abroad to halt a run on deposits and prevent a collapse of the banks. Picture taken July 27. REUTERS/Lefteris Karagiannopoulos

An original 1297 Magna Carta is displayed at the National Archives in Washington, March 18, 2015. Britain's Prince Charles, Prince of Wales, viewed the document on a visit to the repository Wednesday. REUTERS/Jonathan Ernst (UNITED STATES - Tags: POLITICS ROYALS)

A banner which reads, "No nuclear waste at Boezberg!" is seen in Boezberg January 30, 2015. The banner was placed by a local initiative to protest against possible plans for a nuclear waste repository, according to local media. REUTERS/Arnd Wiegmann (SWITZERLAND - Tags: ENERGY ENVIRONMENT CIVIL UNREST)

A Swiss national flag flies in front of a banner which reads, "No nuclear waste at Boezberg!", in Boezberg January 30, 2015. The banner was placed by a local initiative to protest against possible plans for a nuclear waste repository, according to local media. REUTERS/Arnd Wiegmann (SWITZERLAND - Tags: ENERGY ENVIRONMENT CIVIL UNREST)

A Swiss national flag flies in front of a banner which reads, "No nuclear waste at Boezberg!", in Boezberg January 30, 2015. The banner was placed by a local initiative to protest against possible plans for a nuclear waste repository, according to local media. REUTERS/Arnd Wiegmann (SWITZERLAND - Tags: ENERGY ENVIRONMENT CIVIL UNREST)

A page from The Ladies' Monthly Museum, or Polite Repository of Amusement and Instruction from 1798-1832 is displayed at the "Women Fashion Power exhibition at the Design Museum in London November 4, 2014. REUTERS/Suzanne Plunkett (BRITAIN - Tags: ENTERTAINMENT FASHION SOCIETY)

Camera equipment is seen inside the Canon loan service office at the Maracana stadium in Rio de Janeiro July 12, 2014. In a project called "On the Sidelines" Reuters photographers share pictures showing their own quirky and creative view of the 2014 World Cup in Brazil. Picture taken using a fisheye lens. REUTERS/Eddie Keogh (BRAZIL - Tags: SPORT SOCCER WORLD CUP SOCIETY MEDIA SCIENCE TECHNOLOGY)

Emergency personnel carry a casket draped with a U.S. flag during the ceremonial transfer of the 9/11 unidentified remains to the Office of the Chief Medical Examiner of the City of New York (OCME) repository at the World Trade Center site, in New York May 10, 2014. According to local media, relatives of victims of the September 11 attacks, who are incensed with the city over its plan to house the remains underground in the same building as the National September 11 Memorial Museum, held a protest on the day of the transfer of the remains. The protesters left shortly before the ceremony began. REUTERS/Eric Thayer (UNITED STATES - Tags: POLITICS SOCIETY)

Emergency personnel arrive in their vehicles during the ceremonial transfer of the 9/11 unidentified remains to the Office of the Chief Medical Examiner of the City of New York (OCME) repository at the World Trade Center site, in New York May 10, 2014. According to local media, relatives of victims of the September 11 attacks, who are incensed with the city over its plan to house the remains underground in the same building as the National September 11 Memorial Museum, held a protest on the day of the transfer the remains. The protesters left shortly before the ceremony began. REUTERS/Eric Thayer (UNITED STATES - Tags: CIVIL UNREST POLITICS SOCIETY)

One of the family members of victims of the September 11 attacks with a cloth tied around his mouth demonstrates against the decision to transfer the 9/11 unidentified remains to the Office of the Chief Medical Examiner of the City of New York (OCME) repository at the World Trade Center site, before the ceremonial transfer in New York May 10, 2014. Relatives, who are protesting, are incensed with the city over its plan to house the remains underground in the same building as the National September 11 Memorial Museum, local media reported. REUTERS/Eric Thayer (UNITED STATES - Tags: CIVIL UNREST POLITICS SOCIETY)

One of the family members of victims of the September 11 attacks holds a sign while demonstrating against the decision to transfer the 9/11 unidentified remains to the Office of the Chief Medical Examiner of the City of New York (OCME) repository at the World Trade Center site, before the ceremonial transfer in New York May 10, 2014. Relatives, who are protesting, are incensed with the city over its plan to house the remains underground in the same building as the National September 11 Memorial Museum, local media reported. REUTERS/Eric Thayer (UNITED STATES - Tags: CIVIL UNREST POLITICS SOCIETY)

Members of the media approach family members of victims of the September 11 attacks demonstrating against the decision to transfer the 9/11 unidentified remains to the Office of the Chief Medical Examiner of the City of New York (OCME) repository at the World Trade Center site, before the ceremonial transfer in New York May 10, 2014. Relatives, who are protesting, are incensed with the city over its plan to house the remains underground in the same building as the National September 11 Memorial Museum, local media reported. REUTERS/Eric Thayer (UNITED STATES - Tags: CIVIL UNREST POLITICS SOCIETY)

Family members of victims of the September 11 attacks demonstrate against the decision to transfer the 9/11 unidentified remains to the Office of the Chief Medical Examiner of the City of New York (OCME) repository at the World Trade Center site, before the ceremonial transfer in New York May 10, 2014. Relatives, who are protesting, are incensed with the city over its plan to house the remains underground in the same building as the National September 11 Memorial Museum, local media reported. REUTERS/Eric Thayer (UNITED STATES - Tags: CIVIL UNREST POLITICS SOCIETY)

Family members of victims of the September 11 attacks demonstrate against the decision to transfer the 9/11 unidentified remains to the Office of the Chief Medical Examiner of the City of New York (OCME) repository at the World Trade Center site, before the ceremonial transfer in New York May 10, 2014. Relatives, who are protesting, are incensed with the city over its plan to house the remains underground in the same building as the National September 11 Memorial Museum, local media reported. REUTERS/Eric Thayer (UNITED STATES - Tags: CIVIL UNREST POLITICS SOCIETY)

Family members of victims of the September 11 attacks demonstrate against the decision to transfer the 9/11 unidentified remains to the Office of the Chief Medical Examiner of the City of New York (OCME) repository at the World Trade Center site, before the ceremonial transfer in New York May 10, 2014. Relatives, who are protesting, are incensed with the city over its plan to house the remains underground in the same building as the National September 11 Memorial Museum, local media reported. REUTERS/Eric Thayer (UNITED STATES - Tags: CIVIL UNREST POLITICS SOCIETY)

Family members of victims of the September 11 attacks hold signs while demonstrating against the decision to transfer the 9/11 unidentified remains to the Office of the Chief Medical Examiner of the City of New York (OCME) repository at the World Trade Center site, in New York May 10, 2014. Relatives, who are protesting, are incensed with the city over its plan to house the remains underground in the same building as the National September 11 Memorial Museum, local media reported. REUTERS/Eric Thayer (UNITED STATES - Tags: CIVIL UNREST POLITICS SOCIETY)

One of the family members of victims of the September 11 attacks holds a sign as she protests against the decision to transfer the 9/11 unidentified remains to the Office of the Chief Medical Examiner of the City of New York (OCME) repository at the World Trade Center site in New York May 10, 2014. Relatives, who are protesting, are incensed with the city over its plan to house the remains underground in the same building as the National September 11 Memorial Museum, local media reported. REUTERS/Eric Thayer (UNITED STATES - Tags: CIVIL UNREST POLITICS SOCIETY)

Emergency personnel carry U.S. flag draped caskets during a ceremonial transfer of the 9/11 unidentified remains to the Office of the Chief Medical Examiner of the City of New York (OCME) repository at the World Trade Center site in New York May 10, 2014. REUTERS/Eric Thayer (UNITED STATES - Tags: POLITICS SOCIETY)

Emergency personnel carry a casket draped with a U.S. flag during a ceremonial transfer of the 9/11 unidentified remains to the Office of the Chief Medical Examiner of the City of New York (OCME) repository at the World Trade Center site in New York May 10, 2014. REUTERS/Eric Thayer (UNITED STATES - Tags: POLITICS SOCIETY)

A Natural Gas rig operated by Chesapeake is pictured in Bradford County, Pennsylvania just outside the town of Wyalusing, January 13, 2013. Wyalusing is located in the center of the Marcellus Shale, a deep repository of natural gas that runs through West Virginia, Ohio, Pennsylvania and New York, that the energy industry has aggressively sought to drill. Picture taken January 13, 2013. REUTERS/Brett Carlsen (UNITED STATES - Tags: ENERGY ENVIRONMENT SCIENCE TECHNOLOGY)

A Natural Gas rig operated by Chesapeake is picture in Bradford County, Pennsylvania just outside the town of Wyalusing, January 13, 2013. Wyalusing is located in the center of the Marcellus Shale, a deep repository of natural gas that runs through West Virginia, Ohio, Pennsylvania and New York, that the energy industry has aggressively sought to drill. Picture taken January 13, 2013. REUTERS/Brett Carlsen (UNITED STATES - Tags: ENERGY ENVIRONMENT SCIENCE TECHNOLOGY)

A Natural Gas rig operated by Chesapeake is pictured in Bradford County, Pennsylvania just outside the town of Wyalusing on January 13, 2013. Wyalusing is located in the center of the Marcellus Shale, a deep repository of natural gas that runs through West Virginia, Ohio, Pennsylvania and New York, that the energy industry has aggressively sought to drill. Picture taken January 13, 2013. REUTERS/Brett Carlsen (UNITED STATES - Tags: ENERGY ENVIRONMENT SCIENCE TECHNOLOGY)

A Natural Gas rig operated by Chesapeake is pictured in Bradford County, Pennsylvania just outside the town of Wyalusing on January 13, 2013. Wyalusing is located in the center of the Marcellus Shale, a deep repository of natural gas that runs through West Virginia, Ohio, Pennsylvania and New York, that the energy industry has aggressively sought to drill. Picture taken January 13, 2013. REUTERS/Brett Carlsen (UNITED STATES - Tags: ENERGY ENVIRONMENT SCIENCE TECHNOLOGY)

A Natural Gas rig operated by Chesapeake is pictured in Bradford County, Pennsylvania just outside the town of Wyalusing on January 13, 2013. Wyalusing is located in the center of the Marcellus Shale, a deep repository of natural gas that runs through West Virginia, Ohio, Pennsylvania and New York, that the energy industry has aggressively sought to drill. Picture taken January 13, 2013. REUTERS/Brett Carlsen (UNITED STATES - Tags: ENERGY ENVIRONMENT SCIENCE TECHNOLOGY)

A mailbox with a form duct taped to the post is all that remains at the driveway of a natural gas well pad site after the rig was removed in Springfield Township, Pennsylvania January 13, 2013. Springfield Township is located in the center of the Marcellus Shale, a deep repository of natural gas that runs through West Virginia, Ohio, Pennsylvania and New York, that the energy industry has aggressively sought to drill. Picture taken January 13, 2013. REUTERS/Brett Carlsen (UNITED STATES - Tags: ENERGY ENVIRONMENT SCIENCE TECHNOLOGY)

A line of trucks carrying water to Natural gas rigs make their way across the sprawling network of two lane roads between small towns to make almost constant deliveries to continue the hydraulic fracturing process used to gather natural gas in Monroeton, Pennsylvania, January 13, 2013. Monroeton sits in the center of the Marcellus Shale, a deep repository of natural gas that runs through West Virginia, Ohio, Pennsylvania and New York, that the energy industry has aggressively sought to drill. Picture taken January 13, 2013. REUTERS/Brett Carlsen (UNITED STATES - Tags: ENERGY ENVIRONMENT SCIENCE TECHNOLOGY)

A Natural Gas rig operated by Chesapeake is pictured in Bradford County, Pennsylvania just outside the town of Wyalusing on January 13, 2013. Wyalusing is located in the center of the Marcellus Shale, a deep repository of natural gas that runs through West Virginia, Ohio, Pennsylvania and New York, that the energy industry has aggressively sought to drill. Picture taken January 13, 2013. REUTERS/Brett Carlsen (UNITED STATES - Tags: ENERGY ENVIRONMENT SCIENCE TECHNOLOGY)

A Natural Gas rig operated by Chesapeake is pictured in Bradford County, Pennsylvania just outside the town of Wyalusing on January 13, 2013. Wyalusing is located in the center of the Marcellus Shale, a deep repository of natural gas that runs through West Virginia, Ohio, Pennsylvania and New York, that the energy industry has aggressively sought to drill. Picture taken January 13, 2013. REUTERS/Brett Carlsen (UNITED STATES - Tags: ENERGY ENVIRONMENT SCIENCE TECHNOLOGY)

A Natural Gas rig operated by Chesapeake is pictured in Bradford County, Pennsylvania just outside the town of Wyalusing on January 13, 2013. Wyalusing is located in the center of the Marcellus Shale, a deep repository of natural gas that runs through West Virginia, Ohio, Pennsylvania and New York, that the energy industry has aggressively sought to drill. Picture taken January 13, 2013. REUTERS/Brett Carlsen (UNITED STATES - Tags: ENERGY ENVIRONMENT SCIENCE TECHNOLOGY)

A Natural Gas rig operated by Chesapeake is pictured in Bradford County, Pennsylvania just outside the town of Wyalusing on January 13, 2013. Wyalusing is located in the center of the Marcellus Shale, a deep repository of natural gas that runs through West Virginia, Ohio, Pennsylvania and New York, that the energy industry has aggressively sought to drill. Picture taken January 13, 2013. REUTERS/Brett Carlsen (UNITED STATES - Tags: ENERGY ENVIRONMENT SCIENCE TECHNOLOGY)

A Chesapeake Energy natural gas well pad rests on the hill in Litchfield Township, Pennsylvania, January 9, 2013. Litchfield Township sits in the center of the Marcellus Shale, a deep repository of natural gas that runs through West Virginia, Ohio, Pennsylvania and New York, that the energy industry has aggressively sought to drill. Picture taken January 9, 2013. REUTERS/Brett Carlsen (UNITED STATES - Tags: ENERGY ENVIRONMENT SCIENCE TECHNOLOGY)

A Chesapeake Energy natural gas well pad rests on the hill in Litchfield Township, Pennsylvania, January 9, 2013. Litchfield Township sits in the center of the Marcellus Shale, a deep repository of natural gas that runs through West Virginia, Ohio, Pennsylvania and New York, that the energy industry has aggressively sought to drill. Picture taken January 9, 2013. REUTERS/Brett Carlsen (UNITED STATES - Tags: ENERGY ENVIRONMENT SCIENCE TECHNOLOGY)

A natural gas rig is pictured in Springfield Township, Pennsylvania, November 30, 2012. Springfield Township sits in the center of the Marcellus Shale, a deep repository of natural gas that runs through West Virginia, Ohio, Pennsylvania and New York, that the energy industry has aggressively sought to drill. Picture taken on November 30, 2012. REUTERS/Brett Carlsen (UNITED STATES - Tags: ENERGY ENVIRONMENT SCIENCE TECHNOLOGY)

A natural gas rig is pictured in Springfield Township, Pennsylvania, November 30, 2012. Springfield Township sits in the center of the Marcellus Shale, a deep repository of natural gas that runs through West Virginia, Ohio, Pennsylvania and New York, that the energy industry has aggressively sought to drill. Picture taken on November 30, 2012. REUTERS/Brett Carlsen (UNITED STATES - Tags: ENERGY ENVIRONMENT SCIENCE TECHNOLOGY)

A Chesapeake Energy natural gas well pad rests on the hill in Litchfield Township, Pennsylvania, January 9, 2013. Litchfield Township sits in the center of the Marcellus Shale, a deep repository of natural gas that runs through West Virginia, Ohio, Pennsylvania and New York, that the energy industry has aggressively sought to drill. Picture taken January 9, 2013. REUTERS/Brett Carlsen (UNITED STATES - Tags: ENERGY ENVIRONMENT SCIENCE TECHNOLOGY)

A stuffed tiger and leopards are seen wrapped in plastic at the Royal Museum for Central Africa in Tervuren, near Brussels, January 22, 2014.Some of the exhibits at Belgium's Museum for Central Africa anger many visitors for the way they portray African people and Belgium's brutal colonial past. Now Belgium wants to change that, at least a little. It is spending 66 million euro ($90 million) to modernise the museum and put a new face on the colonial experience. The decisions about what to keep raise questions about the extent to which Belgium is facing up to its past even now, more than five decades since Congo won its independence. Picture taken January 22, 2014. To match Feature BELGIUM-CONGO/MUSEUM REUTERS/Francois Lenoir (BELGIUM - Tags: ANIMALS SOCIETY POLITICS)

The entrance of a breast milk bank is seen at the Guangzhou Women and Children's medical centre in the southern Chinese city of Guangzhou May 8, 2013. With China's first breast milk bank opening in June at the centre, about 80 moms have donated to premature babies and other needy infants since the trial period started in late March, local media reported. REUTERS/Tyrone Siu (CHINA - Tags: HEALTH SOCIETY)

Police officers use a crane to remove anti-nuclear protesters sitting on a platform around a block of concrete symbolising Gorleben nuclear waste repository, during May Day protests in Berlin, May 1, 2013. REUTERS/Tobias Schwarz (GERMANY - Tags: POLITICS CIVIL UNREST)

Police officers use a crane to remove anti-nuclear protesters sitting on a platform around a block of concrete symbolising Gorleben nuclear waste repository, during May Day protests in Berlin, May 1, 2013. REUTERS/Fabrizio Bensch (GERMANY - Tags: POLITICS CIVIL UNREST)

German Chancellor Angela Merkel speaks during the Alfred Herrhausen Conference at the Deutsche Bank building in Berlin, September 28, 2012. The German word "Endlager" in the background translates "Nuclear Waste Repository." REUTERS/Thomas Peter (GERMANY - Tags: POLITICS BUSINESS)

German Chancellor Angela Merkel speaks during the Alfred Herrhausen Conference at the Deutsche Bank building in Berlin, September 28, 2012. The German word "Endlager" in the background translates "Nuclear Waste Repository." REUTERS/Thomas Peter (GERMANY - Tags: POLITICS BUSINESS)

German Chancellor Angela Merkel awaits the start of a parliamentary hearing session on the Gorleben nuclear waste repository, in Berlin, September 27, 2012. REUTERS/Tobias Schwarz (GERMANY - Tags: POLITICS)

German Chancellor Angela Merkel awaits the start of a parliamentary hearing session on the Gorleben nuclear waste repository, in Berlin, September 27, 2012. REUTERS/Tobias Schwarz (GERMANY - Tags: POLITICS)

The seat reserved for German Chancellor Angela Merkel is pictured before the start of a parliamentary hearing session on the Gorleben nuclear waste repository, in Berlin, September 27, 2012. REUTERS/Tobias Schwarz (GERMANY - Tags: POLITICS)

German Chancellor Angela Merkel sits in the witness box to answer to a parliamentary hearing about the Gorleben nuclear waste repository, in Berlin, September 27, 2012. REUTERS/Thomas Peter (GERMANY - Tags: POLITICS)

German Chancellor Angela Merkel awaits the start of a parliamentary hearing session on the Gorleben nuclear waste repository, in Berlin, September 27, 2012. REUTERS/Tobias Schwarz (GERMANY - Tags: POLITICS)