ALTHOUGH the United States takes a bigger share of the international student market than any other country, with 22% of the total, it underperforms in relation to its size.

Industry generates about 70 times as much value from a litre of water as agriculture, which helps to explain why industry takes the lion's share in most rich countries.

First of all the data indicates how omnipresent social networks have become in everyday web use - in this case, Facebook takes a mammoth 55% share of all social networking traffic.