Wake effects and temperature plumes: Coping with non-knowledge in the expansion of wind and geothermal energy.

Energy transitions are knowledge-intensive processes where a multitude of actors are trying to cope with inevitable knowledge gaps, surprises, and uncertainties. In this context, we focus on two techno-physical phenomena that are gaining practical relevance with the expansion of wind and geothermal energy extraction, and are surrounded by significant unknowns: wake effects and temperature plumes. Both phenomena can potentially affect the efficiency of energy production, but the extent of their impact is not yet known.

"It shouldn't look aggressive": How conceptions about publics shape the development of mining exploration technologies.

Today, industrial-scale mining is a high-tech activity that transforms places and regions by creating massive technological infrastructures. "The public" and its relationship with this industry are seen as increasingly relevant for mining projects; however, the role technologies play in this regard is as yet under-researched. In this article, we use an example from the European Union's Horizon 2020 research program to examine how technoscientific actors build relationships with the public in the context of mining technology development.

Technological change in revitalization - Phytoremediation and the role of nonknowledge.

In the 1990s, remediation methods that use plants to investigate and extract contaminations were developed. According to their proponents, these technologies have considerable potential for greening remediation and to develop a more sustainable trajectory for revitalization. Although a great deal of research has been conducted on these technologies they have, so far, rarely been applied in European countries.