The recent controversy over genetically modified (GM) foods amply demonstrates the general difficulties encountered in the social appraisal of technological risk. Existing procedures for regulatory appraisal neglect many possible forms of impact and routinely exclude important cultural and...

The ability of innovation—both technical and social—to stretch and redefine ‘limits to growth’ was recognised at Stockholm in 1972, and has been a key feature in debates through to Rio+20 in 2012. Compared with previous major moments of global reflection about human and planetary...