State of the Planet

News from the Columbia Climate School

Deep Decarbonization Pathways Project

  • From Good Intentions to Deep Decarbonization

    From Good Intentions to Deep Decarbonization

    The most important issue is whether countries will achieve their 2030 targets in a way that helps them to get to zero emissions by 2070. If they merely pursue measures aimed at reducing emissions in the short term, they risk locking their economies into high levels of emissions after 2030. The critical issue, in short,…

  • U.S. Could Cut Per Capita Greenhouse Emissions 90% by 2050, Says Report

    U.S. Could Cut Per Capita Greenhouse Emissions 90% by 2050, Says Report

    The report says it is possible to revamp the energy system in a way that reduces per capita carbon dioxide emissions from 17 tons per person currently to 1.7 tons in 2050, while still providing all the services people expect, from driving to air conditioning.

  • Paths to Decarbonization: A Live Twitter Q&A

    Paths to Decarbonization: A Live Twitter Q&A

    @UNSDSN is hosting a live Twitter Q&A on Friday, Dec. 19, from 1-2 p.m. EST with Jim Williams, chief scientist at Energy and Environmental Economics Inc. and lead author on the U.S. Deep Decarbonization Pathways Project report. You can send in your questions before and during the live chat on Twitter or Facebook by using…

  • Study Charts Path to Low Carbon in Major Emitting Countries

    First Global Cooperative Effort Aims to Support UN Climate Talks

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

  • From Good Intentions to Deep Decarbonization

    From Good Intentions to Deep Decarbonization

    The most important issue is whether countries will achieve their 2030 targets in a way that helps them to get to zero emissions by 2070. If they merely pursue measures aimed at reducing emissions in the short term, they risk locking their economies into high levels of emissions after 2030. The critical issue, in short,…

  • U.S. Could Cut Per Capita Greenhouse Emissions 90% by 2050, Says Report

    U.S. Could Cut Per Capita Greenhouse Emissions 90% by 2050, Says Report

    The report says it is possible to revamp the energy system in a way that reduces per capita carbon dioxide emissions from 17 tons per person currently to 1.7 tons in 2050, while still providing all the services people expect, from driving to air conditioning.

  • Paths to Decarbonization: A Live Twitter Q&A

    Paths to Decarbonization: A Live Twitter Q&A

    @UNSDSN is hosting a live Twitter Q&A on Friday, Dec. 19, from 1-2 p.m. EST with Jim Williams, chief scientist at Energy and Environmental Economics Inc. and lead author on the U.S. Deep Decarbonization Pathways Project report. You can send in your questions before and during the live chat on Twitter or Facebook by using…

  • Study Charts Path to Low Carbon in Major Emitting Countries

    First Global Cooperative Effort Aims to Support UN Climate Talks