The 2003 introduction of stricter gun controls led to a significant reduction in gun-related homicides and other crimes

Well-intentioned regulation may be causing multinationals to shunt polluting activities to poorer countries where regulation isn’t so strict

Farmer selection and researcher interference during trials can introduce bias, impacting how new technologies perform in real-world conditions

The spread of export agriculture and print technologies across Africa transformed ethnicity via their effects on politicisation and boundary-making

Resource constraints due to climate change are increasing conflicts between herders and farmers trying to make a living

Councilors who thought performance reports would be published before an election invested more in infrastructure, with positive impacts on re-election

The introduction of financial institutions in communities may generate long-lasting externalities, including losses in informal social linkages

How automatic payments can help individuals save more and better protect themselves against consumer risks

Access to fast cash through digital credit may put consumers at risk for over-indebtedness and likelihood of default