In his eyes, the variety of methods, data and scientific perspectives have a moral task and this sort of suggests there IS a common denominator. This would be the environmentalist concern. In this sense Warde holds a view different from previous guest, Donald Worster, who wishes to see the field detached from the political agenda, even if the practitioners subscribe to that. I wonder whether the blanding effect Warde sees in a common denominator, may also be at work in a field of environmental history that would represent a branch of social activism.
NB: In the mean time I have found out that Donald Worster was also interviewed on New Books In History. I am listening to that podcast right now and will embody my thoughts in the upcoming combined review of NBIH episodes.
More Environmental History:
Defining Environmental History - Donald Worster,
Natural Disasters,
Canada and New Zealand,
Environmental history,
Climate Change in recent history.