State of the Planet

News from the Columbia Climate School

Clean energy3

  • When High Hopes Make Little Sense: Why the Hartwell Paper Fails to Deliver

    Earlier this year, 14 energy academics, analysts and advocates gathered with hopes of reinventing the way the international community treats climate policy. The result, The Hartwell Paper: A new direction for climate policy after the crash of 2009, aims to examine “all aspects of the crisis which enveloped global climate policy” last December during the…

  • Gore, Sachs Address Way Forward on Climate Change

    On February 20, 2007, Jeffrey D. Sachs, Director of the Earth Institute at Columbia University, and former U.S. Vice President Al Gore spoke to a packed house in Columbia’s Low Library Rotunda to address the next steps needed to mitigate the global climate crisis. Gore called upon younger generations to speak up and demand change…

Photo of the Earth from space with the text "Lamont at AGU25" on top.

AGU25, the premier Earth and space science conference, takes place December 15-19, 2025 in New Orleans, Louisiana. This year’s theme—Where Science Connects Us—puts in focus how science depends on connection, from the lab to the field to the ballot box. Once again, Lamont-Doherty Earth Observatory and Columbia Climate School scientists, experts, students, and educators are playing an active role, sharing our research and helping shape the future of our planet. #AGU25 Learn More

  • When High Hopes Make Little Sense: Why the Hartwell Paper Fails to Deliver

    Earlier this year, 14 energy academics, analysts and advocates gathered with hopes of reinventing the way the international community treats climate policy. The result, The Hartwell Paper: A new direction for climate policy after the crash of 2009, aims to examine “all aspects of the crisis which enveloped global climate policy” last December during the…

  • Gore, Sachs Address Way Forward on Climate Change

    On February 20, 2007, Jeffrey D. Sachs, Director of the Earth Institute at Columbia University, and former U.S. Vice President Al Gore spoke to a packed house in Columbia’s Low Library Rotunda to address the next steps needed to mitigate the global climate crisis. Gore called upon younger generations to speak up and demand change…