The IPCC authors write that “judicious labelling, framing, and communication of social norms can also increase the effect of mandates, subsidies, or taxes.” Interventions that change the “choice architecture” so people have an easier time taking the cleaner option include: default enrollment in green programs, increasing taxes on carbon-intensive products, and substantially tightening regulations and standards.
Nudging, choice architecture, feedback, rewarding and priming all become important variables to accelerate large scale aggregate of individual actions that can make a difference.