Linking environmental sustainability with poverty reduction and social justice, and making science and technology work for the poor, have become central practical, political and moral challenges of our times. These must be met in a world of rapid, interconnected change in environments, societies...

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...