After an air-quality monitoring and disclosure program in China, sales of air purifiers and face masks increased - highlighting how information can change behaviour.
Most low-income countries collect between 10 and 20 percent of their GDP in tax revenue, in comparison to high-income countries' average of nearly 40 percent.
The effect of a more selective school on wages conditional on working is small compared to the effect on the likelihood of working.
The latest stats argue that during the last two decades the US economy has stagnated whilst European markets have flourished.
Positive export shocks have a clear effect on innovation within successful firms.
In Mexico cash rewards are given for school attendance and health centre visits.
