When scrounging round the internet today, wasting time as I usually do I came across a very interesting web site, Our World Beta 2.0  . In their very own words :

“Our World 2.0 is brought to you by the United Nations University and asks the question: What can we do when faced with complex, inter-connected and pressing problems like climate change, oil depletion and food security?” 

It an interesting site, with well written articles and ideas, so go on have a look.