Although topic A at Davos is the financial meltdown, a few brave souls took it upon themselves to grapple with the still existing - and for the last few months largely ignored - problem of global warming.
Despite plans to slash carbon dioxide (C02) emissions, the world still faces a very basic, and very big, problem.
In the coming years we face an unprecedented challenge -- to provide the means for global prosperity, growth and stability from a radically different set of energy sources.
Climate change could devastate the global economy on a scale of the two world wars and the depression of the 1930s if left unchecked, a top economist has warned.