Davos Man2 Many happy returns or midlife crisis?

The annual talkfest in the Alps records its 40th birthday this year but the rich and powerful will hardly be in celebratory mood as problems pile up in the post-crisis world.

How to withdraw the trillions of dollars in stimulus that helped the world avoid a rerun of the Great Depression, without spooking markets all over again?

What to do in the face of the world's lukewarm response to the hot topic of climate change?

How to deal with an ascendant China striding out with a new confidence on the world stage and ready to clash with the West over issues such as Google?

For 'Davos Man' -- and 85% of participants at the World Economic Forum are still men -- these are testing times.