State of the Planet

News from the Columbia Climate School

Lamont-Doherty Earth Observatory104

  • Understanding Earth’s Geologic History to Predict the Future

    Understanding Earth’s Geologic History to Predict the Future

    Organic geochemist Pratigya Polissar is developing new tools to look at the history of plants and ecosystems on Earth over the past 20 million years.

  • Studying Bioluminescent Blooms in the Arabian Sea

    Studying Bioluminescent Blooms in the Arabian Sea

    A plankton-like species is attacking the base of the food chain in the Arabian sea, disrupting water quality and killing fish. Researchers at the Lamont-Doherty Earth Observatory are learning how to fight back.

  • American Geophysical Union 2017: Key Events From the Earth Institute

    American Geophysical Union 2017: Key Events From the Earth Institute

    A chronological guide to key talks and other events presented by Columbia University’s Earth Institute at the American Geophysical Union 2017 meeting. 

  • Want to Save the World? Start by Eating Less Beef

    Want to Save the World? Start by Eating Less Beef

    If we ate half as many burgers and steaks each week, a new study calculates that it could have a profound effect on carbon emissions and the environment.

  • The Way We Were: Climate and Human Evolution

    The Way We Were: Climate and Human Evolution

    In a remote desert region around Kenya’s Lake Turkana, paleoecologist and geochemist Kevin Uno collects fossils and sediments, searching for evidence about past climate, vegetation, animals, and water. His goal: to understand how climate affected our ancestors millions of years ago.

  • Why Do Floods Sometimes Happen on Sunny Days?

    Why Do Floods Sometimes Happen on Sunny Days?

    Some towns and cities can get soaked even when the skies are dry—and these so-called sunny day floods are on the rise thanks to climate change.

  • A Bit of Sun on an Antarctic Thanksgiving

    A Bit of Sun on an Antarctic Thanksgiving

    The Rosetta team made two big accomplishments this week: Our lidar returned some beautiful 3D images of the sea ice topography, which can be used to study small details of the ice. And our own Chloe Gustafson won first place in the Antarctic Turkey Trot. She now holds the honor of being the first woman…

  • Greener on the Other Side: ESP Students’ Sustainability Podcast

    Greener on the Other Side: ESP Students’ Sustainability Podcast

    Students from the MPA in Environmental Science and Policy program at SIPA have produced a podcast called “Greener on the Other Side,” on sustainability, climate change, and the environment.

  • Ear to the Ground, Listening for Nuclear Blasts

    Ear to the Ground, Listening for Nuclear Blasts

    Seismologist Lynn Sykes has been working for more than 50 years to halt the testing of nuclear bombs. In his forthcoming book, Silencing the Bomb: One Scientist’s Quest to Halt Nuclear Testing, Sykes provides an insider’s look at the science behind detecting explosions, and international efforts to establish a series of treaties.

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.

  • Understanding Earth’s Geologic History to Predict the Future

    Understanding Earth’s Geologic History to Predict the Future

    Organic geochemist Pratigya Polissar is developing new tools to look at the history of plants and ecosystems on Earth over the past 20 million years.

  • Studying Bioluminescent Blooms in the Arabian Sea

    Studying Bioluminescent Blooms in the Arabian Sea

    A plankton-like species is attacking the base of the food chain in the Arabian sea, disrupting water quality and killing fish. Researchers at the Lamont-Doherty Earth Observatory are learning how to fight back.

  • American Geophysical Union 2017: Key Events From the Earth Institute

    American Geophysical Union 2017: Key Events From the Earth Institute

    A chronological guide to key talks and other events presented by Columbia University’s Earth Institute at the American Geophysical Union 2017 meeting. 

  • Want to Save the World? Start by Eating Less Beef

    Want to Save the World? Start by Eating Less Beef

    If we ate half as many burgers and steaks each week, a new study calculates that it could have a profound effect on carbon emissions and the environment.

  • The Way We Were: Climate and Human Evolution

    The Way We Were: Climate and Human Evolution

    In a remote desert region around Kenya’s Lake Turkana, paleoecologist and geochemist Kevin Uno collects fossils and sediments, searching for evidence about past climate, vegetation, animals, and water. His goal: to understand how climate affected our ancestors millions of years ago.

  • Why Do Floods Sometimes Happen on Sunny Days?

    Why Do Floods Sometimes Happen on Sunny Days?

    Some towns and cities can get soaked even when the skies are dry—and these so-called sunny day floods are on the rise thanks to climate change.

  • A Bit of Sun on an Antarctic Thanksgiving

    A Bit of Sun on an Antarctic Thanksgiving

    The Rosetta team made two big accomplishments this week: Our lidar returned some beautiful 3D images of the sea ice topography, which can be used to study small details of the ice. And our own Chloe Gustafson won first place in the Antarctic Turkey Trot. She now holds the honor of being the first woman…

  • Greener on the Other Side: ESP Students’ Sustainability Podcast

    Greener on the Other Side: ESP Students’ Sustainability Podcast

    Students from the MPA in Environmental Science and Policy program at SIPA have produced a podcast called “Greener on the Other Side,” on sustainability, climate change, and the environment.

  • Ear to the Ground, Listening for Nuclear Blasts

    Ear to the Ground, Listening for Nuclear Blasts

    Seismologist Lynn Sykes has been working for more than 50 years to halt the testing of nuclear bombs. In his forthcoming book, Silencing the Bomb: One Scientist’s Quest to Halt Nuclear Testing, Sykes provides an insider’s look at the science behind detecting explosions, and international efforts to establish a series of treaties.