State of the Planet

News from the Columbia Climate School

choice architecture

  • Helping Consumers See the Green Behind Fuel Economy

    Helping Consumers See the Green Behind Fuel Economy

    New research from the Center for Research on Environmental Decisions sheds light on how best to present information on U.S. fuel economy labels. Consumers choose fuel-efficient vehicles more frequently when fuel economy is expressed in terms of the cost of gas on a long term, 100,000-mile scale. The scale currently used on the U.S. fuel…

  • Making Green Behavior Automatic

    Making Green Behavior Automatic

    A default is defined as an option that applies if the chooser does nothing. The good news is that setting greener choices as defaults can automatically nudge people into more sustainable behavior.

Collage of Turkiye beach scene and Columbia University Campus with text: UN Climate Change Conference COP31, Antalya, Turkiye, Nov 9-20, 2026

COP31, the 2026 United Nations Climate Change Conference, aims to advance dialogue, strengthen consensus, and accelerate climate action on a global scale. From November 9–20, 2026 in Antalya, Türkiye, heads of state, ministers, scientists, business leaders, and civil society will gather to advance efforts in emission targets, climate finance, and adaptation and resilience. Once again, our experts, students, and global thought leaders from Columbia Climate School and across Columbia University are contributing to key events, sharing insights, and helping shape the dialogue toward ambitious, science-based solutions. Learn More

  • Helping Consumers See the Green Behind Fuel Economy

    Helping Consumers See the Green Behind Fuel Economy

    New research from the Center for Research on Environmental Decisions sheds light on how best to present information on U.S. fuel economy labels. Consumers choose fuel-efficient vehicles more frequently when fuel economy is expressed in terms of the cost of gas on a long term, 100,000-mile scale. The scale currently used on the U.S. fuel…

  • Making Green Behavior Automatic

    Making Green Behavior Automatic

    A default is defined as an option that applies if the chooser does nothing. The good news is that setting greener choices as defaults can automatically nudge people into more sustainable behavior.