The article is an attempt to discuss the idea of risk society from the perspective of historical sociology or, to be more precise, the theory of social becoming developed by Piotr Sztompka. In this sense, the societal reality of risk society seems to be characterized by a specific innate dynamism rendering possible the discrepancy between objective volume of experienced risk and the perceived intensity of social uncertainty. This process can be expressed in terminology based upon the notion of the 'historical coefficient' postulating that the morphogenesis of risk society resembles a series of historical processes of conflict and negotiation in which individuals exercise their agency in the context of determining - both constraining and enabling - influence of history. In this context, the dynamic character of risk society may be discussed in terms of the Social Amplification of Risk Framework which tries to unveil the social nature of technological risk amplification and attenuation. The principal role in the process of risk amplification is granted to environmentalist social movements which may act as 'amplification stations', shaping social responses to technological risk in the reality of risk society.