Thus, contrary to the notion of a stable historic global climate, at some point, things must have been very different from documented history. To accomplish both of these things, Callendar was tasked with developing the trench burners, among other elements. In any event, going back to Keeling’s research, after he published his data, climate scientists and a handful of world leaders finally started paying attention. At the cost of only in the billions for such a program, this is far less than is already being spent to counter the current effects of climate change on coastal cities. And in the last decade particularly, we’ve finally started admitting en masse that we have a cheeseburger, and climate change, problem, which is always the first step to finding a solution.