Due to the issues raised above, the current literature involves two different approaches to climate policy design.15 One approach looks at the expected costs and benefits of increasingly stringent penalties on emissions, and then prescribes a policy that equates the marginal benefits (in terms of avoided future climate change damage) with the marginal costs (in terms of forfeited economic output). This is the approach of theorists such as William Nordhaus, and it results in a “policy ramp” where the equilibrium path involves only modest emission cutbacks in early decades, so that the weaning away from fossil fuels is much more gradual compared to other proposals.16 This “ramp” occurs because distant climate damages are heavily discounted for the first few decades, and because of technological improvement over time, which makes emission reductions relatively cheaper if they are postponed.
Annotation #3:This passage changed my perspective on climate policy by introducing the concept of a "policy ramp," where emissions reductions happen gradually rather than immediately. I had always thought that effective climate action required rapid and drastic cuts to fossil fuel use, but this passage suggests that a gradual transition may be more economically and politically feasible. The idea that climate damages are "heavily discounted" in early decades and that technological advancements will make future reductions cheaper is a perspective I hadn’t considered before. This insight reshapes how I think about climate strategies—not just as urgent, but as long-term processes that require balancing economic growth and environmental sustainability.
This connects to today's inquiry question—How does economic growth affect the environment?—because it highlights how economic concerns often delay aggressive climate policies to avoid short-term economic downturns. While immediate emissions reductions could significantly benefit the environment, they may also harm economic stability, making governments and industries more reluctant to act. Instead, this "policy ramp" approach suggests that delaying major cuts while investing in cleaner technologies can make the transition smoother and more effective in the long run.
A study by Pizer et al. (2018) supports this idea, arguing that gradual carbon pricing and technological innovation can lead to cost-effective climate mitigation without disrupting economic growth. They emphasize that long-term policies should focus on reducing emissions efficiently while maintaining economic stability.
Pizer, William A., et al. “Carbon Markets: Past, Present, and Future.” Annual Review of Resource Economics, 2018, pp. 17–43. https://doi.org/10.1146/annurev-resource-100517-023028.