State of the Planet

News from the Columbia Climate School

Lamont-Doherty Earth Observatory153

  • Tides Play a Role in Triggering Undersea Earthquakes

    Tides Play a Role in Triggering Undersea Earthquakes

    Can shifting tides trigger earthquakes? Research done by Maya Tolstoy, a geophysicist at Lamont-Doherty Earth Observatory, suggests they do.

  • 400 ppm World, Part 1: Large Changes Still to Come

    400 ppm World, Part 1: Large Changes Still to Come

    Why should society care that CO2 is now as high as 400 ppm? The reasons are multiple, but all trace back to the relationship between CO2 and temperature.

  • Climate in the Peruvian Andes:  From Early Humans to Modern Challenges

    Climate in the Peruvian Andes: From Early Humans to Modern Challenges

    Twice humans have witnessed the wasting of snow and ice from Peru’s tallest volcano, Nevado Coropuna—In the waning of the last ice age, some 12,000 years ago, and today, as industrial carbon dioxide in the air raises temperatures again. As in the past, Coropuna’s retreating glaciers figure prominently in the lives of people below. In…

  • Lamont Scientist Featured in Antarctic Climate Change Documentary

    Lamont Scientist Featured in Antarctic Climate Change Documentary

    Lamont-Doherty scientist Hugh Ducklow is featured in a documentary due out next summer on climate change and the West Antarctic Peninsula. Catch a preview in this newly-released trailer.

  • A Tale of Sea Ice, Algae and the Arctic

    A Tale of Sea Ice, Algae and the Arctic

    I returned to New York on Monday, but Lamont-Doherty Earth Observatory scientists Andy Juhl and Craig Aumack remain working in Barrow, Alaska for another week. They’ll continue to collect data and samples in a race against deteriorating Arctic sea ice conditions as the onset of summer causes the ice to thin and break up.

  • Arctic Current Flowed Under Deep Freeze of Last Ice Age, Study Says

    Evidence Retrieved from Sediments in Remote Polar Basins

  • Science, Creativity and Isopods

    Science, Creativity and Isopods

    It’s near midnight and Lamont-Doherty Earth Observatory researchers Andy Juhl and Craig Aumack, and Arizona State’s Kyle Kinzler are gathered around a table in their lab at the Barrow Arctic Research Consortium discussing the best way to catch an isopod.

  • Ctene Sensations of the Arctic Ocean

    Ctene Sensations of the Arctic Ocean

    One of the goals of Andy Juhl’s and Craig Aumack’s Arctic research is to determine the role of ice algae as a source of nutrition for food webs existing in the water column and at the bottom of the Arctic ocean.

  • Collecting Core Data About Arctic Ecosystems

    Collecting Core Data About Arctic Ecosystems

    Our team spent most of Friday on the Arctic sea ice, drilling and sampling ice cores at our main field site. For each core collected, Lamont-Doherty Earth Observatory scientists Andy Juhl and Craig Aumack take a number of different physical, chemical and biological measurements

Colorful icons representing nature, sustainable living, and renewable energy with text "Earth Day 2026"

The first Earth Day in 1970 ignited a movement to stop polluting our planet. Today, our scientists and experts are tackling the most pressing challenges to achieve real-world impact. This Earth Day, join us in our commitment to realizing a just and sustainable future for our planet. Visit our Earth Day website for ideas, resources, and inspiration.

  • Tides Play a Role in Triggering Undersea Earthquakes

    Tides Play a Role in Triggering Undersea Earthquakes

    Can shifting tides trigger earthquakes? Research done by Maya Tolstoy, a geophysicist at Lamont-Doherty Earth Observatory, suggests they do.

  • 400 ppm World, Part 1: Large Changes Still to Come

    400 ppm World, Part 1: Large Changes Still to Come

    Why should society care that CO2 is now as high as 400 ppm? The reasons are multiple, but all trace back to the relationship between CO2 and temperature.

  • Climate in the Peruvian Andes:  From Early Humans to Modern Challenges

    Climate in the Peruvian Andes: From Early Humans to Modern Challenges

    Twice humans have witnessed the wasting of snow and ice from Peru’s tallest volcano, Nevado Coropuna—In the waning of the last ice age, some 12,000 years ago, and today, as industrial carbon dioxide in the air raises temperatures again. As in the past, Coropuna’s retreating glaciers figure prominently in the lives of people below. In…

  • Lamont Scientist Featured in Antarctic Climate Change Documentary

    Lamont Scientist Featured in Antarctic Climate Change Documentary

    Lamont-Doherty scientist Hugh Ducklow is featured in a documentary due out next summer on climate change and the West Antarctic Peninsula. Catch a preview in this newly-released trailer.

  • A Tale of Sea Ice, Algae and the Arctic

    A Tale of Sea Ice, Algae and the Arctic

    I returned to New York on Monday, but Lamont-Doherty Earth Observatory scientists Andy Juhl and Craig Aumack remain working in Barrow, Alaska for another week. They’ll continue to collect data and samples in a race against deteriorating Arctic sea ice conditions as the onset of summer causes the ice to thin and break up.

  • Arctic Current Flowed Under Deep Freeze of Last Ice Age, Study Says

    Evidence Retrieved from Sediments in Remote Polar Basins

  • Science, Creativity and Isopods

    Science, Creativity and Isopods

    It’s near midnight and Lamont-Doherty Earth Observatory researchers Andy Juhl and Craig Aumack, and Arizona State’s Kyle Kinzler are gathered around a table in their lab at the Barrow Arctic Research Consortium discussing the best way to catch an isopod.

  • Ctene Sensations of the Arctic Ocean

    Ctene Sensations of the Arctic Ocean

    One of the goals of Andy Juhl’s and Craig Aumack’s Arctic research is to determine the role of ice algae as a source of nutrition for food webs existing in the water column and at the bottom of the Arctic ocean.

  • Collecting Core Data About Arctic Ecosystems

    Collecting Core Data About Arctic Ecosystems

    Our team spent most of Friday on the Arctic sea ice, drilling and sampling ice cores at our main field site. For each core collected, Lamont-Doherty Earth Observatory scientists Andy Juhl and Craig Aumack take a number of different physical, chemical and biological measurements