Economic inequality, societal polarization and environmental dangers are the three trends that will create the most challenging problems for the world over the next 10 years, according to an annual report that was released at the World Economic Forum (WEF) in Davos, Switzerland, this week. World leaders are gathering in Davos to discuss some of the greatest risks facing the world, and how they might collaborate in solving them. They will be guided in their deliberations in part by the annual Global Risks Report , developed in collaboration with the Wharton Risk Management and Decision Processes Center . Those three key risks form the uppermost layer of 30 different economic, environmental, geopolitical and technology-related challenges and 13 underlying trends included in the report, which was based on surveys with 750 experts. This is the 13 th year the Wharton center has produced the global risk report for the WEF.…