To investigate the ‘promiscuous history’ of the efficiency of emissions trading markets, I draw from Actor Network Theory and specifically the work of Bruno Latour, highlighting how the commonly made claim to efficiency was constructed as a ‘fact’. I trace the processes, beginning in the early 1970s, that constructed first the inefficiency of command-and-control regulation through the distinction between the means and the ends of regulation, and the conversion of the specific 1970 Clean Air Act regulations into the archetypal form of command-and-control.

Natural history collections of plants and animals not only tell us about the world as it was, they can also help shape its future, says Richard Lane.