People walk past a sign in a corridor before the start of the annual meeting of the World Economic Forum (WEF) 2014 in Davos January 21, 2014. The annual Davos gathering, which draws thousands of the world's most powerful people, will this year welcome more than 40 heads of state and government to focus on questions about the world's future, organisers said on Wednesday. This year's event will run from January 22 to 25.
People walk past a sign in a corridor before the start of the annual meeting of the World Economic Forum (WEF) 2014 in Davos January 21, 2014. The annual Davos gathering, which draws thousands of the world's most powerful people, will this year welcome more than 40 heads of state and government to focus on questions about the world's future, organisers said on Wednesday. This year's event will run from January 22 to 25.
Former US vice-president Al Gore looks on before the Crystal Awards Ceremony at the annual meeting of the World Economic Forum (WEF) 2014 in Davos January 21, 2014. The annual Davos gathering, which draws thousands of the world's most powerful people, will this year welcome more than 40 heads of state and government to focus on questions about the world's future, organisers said on Wednesday. This year's event will run from Jan 22 to 25.
Former US vice-president Al Gore looks on before the Crystal Awards Ceremony at the annual meeting of the World Economic Forum (WEF) 2014 in Davos January 21, 2014. The annual Davos gathering, which draws thousands of the world's most powerful people, will this year welcome more than 40 heads of state and government to focus on questions about the world's future, organisers said on Wednesday. This year's event will run from Jan 22 to 25.
Klaus Schwab, founder of the World Economic Forum (WEF), welcomes participant before the Crystal Awards Ceremony at the annual meeting of the WEF 2014 in Davos January 21, 2014. The annual Davos gathering, which draws thousands of the world's most powerful people, will this year welcome more than 40 heads of state and government to focus on questions about the world's future, organisers said on Wednesday. This year's event will run from Jan 22 to 25.
Klaus Schwab, founder of the World Economic Forum (WEF), welcomes participant before the Crystal Awards Ceremony at the annual meeting of the WEF 2014 in Davos January 21, 2014. The annual Davos gathering, which draws thousands of the world's most powerful people, will this year welcome more than 40 heads of state and government to focus on questions about the world's future, organisers said on Wednesday. This year's event will run from Jan 22 to 25.
Matt Damon, actor and co-founder of Water.org, speaks during the Crystal Awards Ceremony at the annual meeting of the World Economic Forum (WEF) 2014 in Davos January 21, 2014. The annual Davos gathering, which draws thousands of the world's most powerful people, will this year welcome more than 40 heads of state and government to focus on questions about the world's future, organisers said on Wednesday. This year's event will run from Jan 22 to 25.
Matt Damon, actor and co-founder of Water.org, speaks during the Crystal Awards Ceremony at the annual meeting of the World Economic Forum (WEF) 2014 in Davos January 21, 2014. The annual Davos gathering, which draws thousands of the world's most powerful people, will this year welcome more than 40 heads of state and government to focus on questions about the world's future, organisers said on Wednesday. This year's event will run from Jan 22 to 25.
A member of staff cleans a stair inside the congress center before the start of the annual meeting of the World Economic Forum (WEF) 2014 in Davos January 21, 2014. The annual Davos gathering, which draws thousands of the world's most powerful people, will this year welcome more than 40 heads of state and government to focus on questions about the world's future, organisers said on Wednesday. This year's event will run from Jan 22 to 25.
A member of staff cleans a stair inside the congress center before the start of the annual meeting of the World Economic Forum (WEF) 2014 in Davos January 21, 2014. The annual Davos gathering, which draws thousands of the world's most powerful people, will this year welcome more than 40 heads of state and government to focus on questions about the world's future, organisers said on Wednesday. This year's event will run from Jan 22 to 25.
A sign is pictured on a door of the Congress Centre before the start of the annual meeting of the World Economic Forum (WEF) 2014 in Davos January 21, 2014. The annual Davos gathering, which draws thousands of the world's most powerful people, will this year welcome more than 40 heads of state and government to focus on questions about the world's future, organisers said. This year's event will run from January 22 to 25.
A sign is pictured on a door of the Congress Centre before the start of the annual meeting of the World Economic Forum (WEF) 2014 in Davos January 21, 2014. The annual Davos gathering, which draws thousands of the world's most powerful people, will this year welcome more than 40 heads of state and government to focus on questions about the world's future, organisers said. This year's event will run from January 22 to 25.
A helicopter starts in front of the InterContinental Hotel before the start of the annual meeting of the World Economic Forum (WEF) 2014 in Davos January 21, 2014. The annual Davos gathering, which draws thousands of the world's most powerful people, will this year welcome more than 40 heads of state and government to focus on questions about the world's future, organisers said on Wednesday. This year's event will run from Jan 22 to 25.
A helicopter starts in front of the InterContinental Hotel before the start of the annual meeting of the World Economic Forum (WEF) 2014 in Davos January 21, 2014. The annual Davos gathering, which draws thousands of the world's most powerful people, will this year welcome more than 40 heads of state and government to focus on questions about the world's future, organisers said on Wednesday. This year's event will run from Jan 22 to 25.
A technician checks the light in the Congress Hall before the start of the annual meeting of the World Economic Forum (WEF) 2014 in Davos January 21, 2014. The annual Davos gathering, which draws thousands of the world's most powerful people, will this year welcome more than 40 heads of state and government to focus on questions about the world's future, organisers said on Wednesday. This year's event will run from Jan 22 to 25.
A technician checks the light in the Congress Hall before the start of the annual meeting of the World Economic Forum (WEF) 2014 in Davos January 21, 2014. The annual Davos gathering, which draws thousands of the world's most powerful people, will this year welcome more than 40 heads of state and government to focus on questions about the world's future, organisers said on Wednesday. This year's event will run from Jan 22 to 25.
Cardinal Peter Turkson, president of the Pontifical Council for Peace and Justice, reads a message from Pope Francis during the Crystal Awards Ceremony at the annual meeting of the World Economic Forum (WEF) 2014 in Davos January 21, 2014. Pope Francis challenged business leaders assembled in Davos on Tuesday to put their wealth at the service of humanity instead of leaving most of the world's population in poverty and insecurity. In the message to more than 2,500 participants at the annual World Economic Forum, the pontiff urged industrialists and bankers to promote inclusive prosperity, but stopped short of chiding them for excesses laid bare by the global financial crisis.
Cardinal Peter Turkson, president of the Pontifical Council for Peace and Justice, reads a message from Pope Francis during the Crystal Awards Ceremony at the annual meeting of the World Economic Forum (WEF) 2014 in Davos January 21, 2014. Pope Francis challenged business leaders assembled in Davos on Tuesday to put their wealth at the service of humanity instead of leaving most of the world's population in poverty and insecurity. In the message to more than 2,500 participants at the annual World Economic Forum, the pontiff urged industrialists and bankers to promote inclusive prosperity, but stopped short of chiding them for excesses laid bare by the global financial crisis.

The annual meeting of the World Economic Forum (WEF) in Davos runs from January 22 to 25, 2014.

The annual Davos gathering, which draws thousands of the world's most powerful people, will this year welcome more than 40 heads of state and government to focus on questions about the world's future, organisers said.