Dr. James Hansen at the UNFCCC: Why we need a price on carbon

In this compelling climate policy discussion, renowned climate scientist Dr. James Hansen examines the science behind global warming, the urgency of reducing atmospheric carbon dioxide levels, and the need for bold international action to address the climate crisis.

Hansen explains why stabilizing Earth’s climate requires lowering atmospheric CO₂ concentrations to approximately 350 parts per million and outlines the growing risks associated with rising global temperatures, including sea level rise, melting ice sheets in Greenland and Antarctica, and increasingly severe impacts on future generations. He highlights the concept of climate justice, exploring the unequal burden of climate change between wealthy and developing nations, current and future generations, and humanity’s impact on biodiversity worldwide.

The discussion focuses on the shortcomings of existing international climate agreements and argues for a transparent, economy-wide carbon pricing system that reflects the true environmental and social costs of fossil fuels. Hansen presents the case for a rising carbon fee and dividend model, which he argues could reduce emissions, stimulate economic growth, create jobs, and accelerate the transition to clean energy technologies.

Addressing issues such as income inequality, fossil fuel subsidies, global emissions responsibility, and international climate cooperation, Hansen offers a practical roadmap for achieving meaningful emissions reductions while supporting economic development and energy access. He also discusses climate tipping points, the risks of delaying action, and why rapid decarbonization is essential to avoid dangerous levels of global warming.

This insightful presentation provides a powerful perspective on climate science, carbon pricing, environmental policy, climate justice, renewable energy, and the urgent actions needed to secure a stable climate for future generations.

Watch the following video for more commentary from the UNFCCC CCOP21.