Releasing its annual Global Risks 2014 report, Geneva- based WEF said that the income disparity was the most likely risk to cause an impact on a global scale in the next decade, while other significant risks include extreme weather events, unemployment and fiscal crises.
"In emerging markets, any failure to create sustainable universal healthcare systems - a constitutional obligation in Brazil and Turkey, and a stated ambition in India, Indonesia and South Africa - may arouse social unrest," the report said.
The risks are grouped under five categories -- economic, environmental, geopolitical, societal and technological -- and measured in terms of their likelihood and potential impact.
After income disparity, experts see extreme weather events as the next mostly likely global risk, followed by unemployment and underemployment, climate change and cyber attacks.
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In terms of impact, the survey found fiscal crises as the most impactful global risk, followed by climate change, water crises, unemployment and underemployment, and then critical information infrastructure breakdown.
"Recent revelations on government surveillance have reduced the international community's willingness to work together to build governance models to address this weakness.
"The effect could be a balkanization of the Internet, or so-called 'cybergeddon', where hackers enjoy overwhelming superiority and massive disruption is commonplace," it added.
The WEF said cyberspace has proved largely resilient to attacks and other disruptions so far, but its underlying dynamic has always been such that "attackers have an easier time than defenders".
The report further said that demographic and economic changes, such as growing middle classes in most emerging-market countries, ageing populations in Europe, China and Japan, and fast-expanding populations in India, North Africa and Middle East are transforming societal expectations and shaping national political priorities.