The 'proactionary principle' was introduced by transhumanists. Whereas precautionaries believe that we are on the brink of environmental catastrophe because we're too willing to take risks, proactionaries believe that humans stand apart from the rest of nature by our capacity for successful risk taking. In terms of current environmental problems, therefore, solutions lie not in turning our backs on our love affair with technology but by intensifying it – through finding new energy sources or even looking at the possibility of inhabiting other worlds.

In this fascinating new book, Steve Fuller and Veronika Lipinska explore attitudes towards the transformation of human nature. They point out that, politically, both those on the right and the left contribute to different sides of the precautionary-proactionary debate, and argue that it will be this distinction, between caution and action, that will come to dominate the political landscape and create new political divisions.