State of the Planet

News from the Columbia Climate School

salt

  • Cutting the Salt in Winter Road Maintenance

    Cutting the Salt in Winter Road Maintenance

    As the capital and environmental costs of road salt continue to mount, has the time come to ask whether we’re putting too much of it on our streets?

  • How Road Salt Harms the Environment

    How Road Salt Harms the Environment

    Recent research indicates that salt is accumulating in the environment and poses an emerging threat both to ecosystems and human health.

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

  • Cutting the Salt in Winter Road Maintenance

    Cutting the Salt in Winter Road Maintenance

    As the capital and environmental costs of road salt continue to mount, has the time come to ask whether we’re putting too much of it on our streets?

  • How Road Salt Harms the Environment

    How Road Salt Harms the Environment

    Recent research indicates that salt is accumulating in the environment and poses an emerging threat both to ecosystems and human health.