While the scientific community has a very high confidence that global warming is real and caused by human activities, the lay press has apparently identified no one group that has actually done the most to reduce greenhouse gases. If such a group exists, who are they? What specific steps have they taken to reduce greenhouse gas emissions? Approximately how many tons of carbon dioxide (or equivalent greenhouse gases) emissions have they prevented, captured, or “sequestered?” And what objective sources can you cite to support your conclusions?

A related question is, what are the major barriers–social, political, economic, technological–holding back countries, non-governmental organizations, and other groups (and individuals) from achieving large-scale reductions and mitigations of greenhouse gases and related global warming effects?