State of the Planet

News from the Columbia Climate School

fuel efficiency

  • Five Important Points About the EPA’s “SAFE Vehicle Rule”

    Five Important Points About the EPA’s “SAFE Vehicle Rule”

    The EPA’s decision to lower fuel efficiency standards could affect more than just greenhouse gas emissions.

  • Biofuels And Jet Travel

    Biofuels And Jet Travel

    Global communication and global travel have transformed economic life in our world and have been important tools in improving quality of life for many. They have transformed our world’s culture in ways that we do not yet fully understand. Let’s take the first small steps in building the technology and business models most appropriate to…

  • 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…

  • The Less Thirsty Cars of the Future

    The Less Thirsty Cars of the Future

    Good news for clean air and water: President Obama unveiled an agreement last week to raise the bar on fuel economy by 2025.

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

  • Five Important Points About the EPA’s “SAFE Vehicle Rule”

    Five Important Points About the EPA’s “SAFE Vehicle Rule”

    The EPA’s decision to lower fuel efficiency standards could affect more than just greenhouse gas emissions.

  • Biofuels And Jet Travel

    Biofuels And Jet Travel

    Global communication and global travel have transformed economic life in our world and have been important tools in improving quality of life for many. They have transformed our world’s culture in ways that we do not yet fully understand. Let’s take the first small steps in building the technology and business models most appropriate to…

  • 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…

  • The Less Thirsty Cars of the Future

    The Less Thirsty Cars of the Future

    Good news for clean air and water: President Obama unveiled an agreement last week to raise the bar on fuel economy by 2025.