Total world GDP is around $60 trillion. But the Bank for International Settlements calculates that there are around $620 trillion worth of derivatives floating around the world.
For 16 years, the US has been the most competitive nation in the world. Now Singapore and Hong Kong are the first and second best, pushing America to the third spot.
Three architecture firms tried to look at how New York will look 20 years down the line. Here are the stunning predictions.