H1: Roman Empire's GDP?

Angus Maddison is like the Sherlock Holmes for compiling world economies statistics on long time horizons, since the year 1AD. He explains how you can work out the GDP of the Roman Empire (going back to the average of gold & wheat units) as well as GDP of China (technologically more advanced in 1000AD, but fell behind after Europe's scientific revolution in the 1500s).
Listen to his interview with BBC here:
http://news.bbc.co.uk/today/hi/today/newsid_7516000/7516994.stm

H1: Gross National Happiness in Bhutan (video)

You've heard of GDP, GNP, maybe HDI. Now see the BBC video on how the remote Himalayan kingdom of Bhutan considers GNH - Gross National Happiness
http://news.bbc.co.uk/player/nol/newsid_4810000/newsid_4813200/4813298.stm?bw=bb&mp=wm&news=1&nol_storyid=4813298&bbcws=1

And also watch how they cope with market failure:
1. Ban on tobacco
2. Removal of Coke & Pepsi advertisements
3. Ban on some TV channels (World Wrestling Federation, MTV)
--> Students glued to TV, less inclined to do homework!

'Happiness is the ultimate desire of every individual.'
- Home & Cultural Affairs Minister, Bhutan
-