Climate science has provided ever more reliable data and models over the last 20–30 years, thereby indicating increasingly severe impacts in the coming decades and centuries. Nonetheless, public concern for climate change and the issue’s perceived importance has been declining over the past few decades, thus giving less public support for ambitious climate policies. Conventional climate communication strategies
have failed to resolve this “climate paradox.” This article reviews research on the psychology of the climate paradox, and rethinks new emerging strategies for how to resolve it in the coming decades.
Agenda 21 required countries to develop and regularly update a national set of indicators for sustainabledevelopment. Several countries now have such sets also including separate indicators for climate change.Some of these indicators typically report global concentration of green house gasses in the atmosphere ortime series for global temperatures. While such indicators may give the public information about the stateof the global climate, they do not provide a benchmark which makes it possible for the public to evaluatethe climate policy of their government.With Kantian ethics as our point of departure, we propose a benchmark for national climate policy.The benchmark is that each nation state should act as if a global treaty on climate change were in place