By using longitudinal information within families (exploiting so-called sibling fixed effects), it finds that happier people go on, many years later, to earn greater incomes.

FORBES: Investing In Psychological Well-Being Pays Off With Income Gains

While existing residents will continue to be guaranteed a home for life, some fear the effects of the new fixed-term tenancies on the neighbourhood around them.

BBC: What future for social housing?

In September, he put in place capital controls and fixed the value of the Malaysian dollar, thus hoping to shield the currency from the ill effects of further stimulus.

ECONOMIST: Malaysia

"At the root of the euro upheaval is a balance of payment crisis caused by the cumulative effects of a 13-year-old one-size-fits-all monetary policy and a fixed exchange rate for a collection of disparate countries in very different stages of economic and structural development, " he argues.

WSJ: Fiction of the EU Summit's Accepted 'Facts'