State of the Planet

News from the Columbia Climate School

Climate181

  • Greenland Glaciers Retreating Faster than Any Time in Past 9,500 Years

    Greenland Glaciers Retreating Faster than Any Time in Past 9,500 Years

    A new study uses sediment cores to track the expansion and retreat of glaciers through time, and finds that they are retreating quickly and are more sensitive to temperature change than previously realized.

  • Study Undercuts Idea That ‘Medieval Warm Period’ Was Global

    Vikings May Not Have Colonized Greenland in Nice Weather

  • India Steps Up on Climate Change

    India Steps Up on Climate Change

    As a nation still in its developing phase, with 1.25 billion citizens and counting, India can’t afford to forego even part of its industrial progress. But we also cannot go on developing without taking into account the emissions produced by industries that are major contributors to global warming.

  • 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,…

  • Watch and Learn: Climate Countdown

    Watch and Learn: Climate Countdown

    Wondering what’s going on in Paris? And why you should care? A team of young people working on climate issues from many perspectives—policy, science, media, activism—have created Climate Countdown, a video web series that follows the people who are crafting paths toward a meaningful climate agreement at the Paris climate summit.

  • From Waterloo to Paris: Students Serve as Delegates for Kiribati

    From Waterloo to Paris: Students Serve as Delegates for Kiribati

    Students from 28 masters in development practice programs, including the Earth Institute’s Masters in Public Administration-Development Practice at Columbia, are participating in various ways at the climate talks in Paris.

  • From Copenhagen to Paris: Moving From Talk to Action on Climate Change

    Globally, individual nations have volunteered greenhouse gas reduction targets in anticipation of the Paris meetings. Unlike Copenhagen, where calls for mandatory reductions and transfer payments to the developing world caused the collapse of any potential agreements, the world community seems more realistic as it approaches the Paris meetings.

  • Growing the Global Economy Without Destroying the Planet

    We need to focus our attention on the existing systems of management and influence now in place and attempt to turn them toward sustainability. This includes national, state and especially local governments, corporations and nonprofit organizations.

  • Six Tough Questions About Climate Change

    Six Tough Questions About Climate Change

    People often ask certain tough questions about climate change— about the costs of cutting carbon emissions, the feasibility of transitioning to renewable energy, and whether it’s already too late to do anything about climate change. Laura Segafredo, manager of the Deep Decarbonization Pathways Project, answers these questions.

Banner with images representing environmental issues and text "You Asked: Our Scientists and Experts Answer Your Burning Questions."

You Asked invites you to share your most pressing questions about climate, science, and sustainability. Lamont-Doherty Earth Observatory and Columbia Climate School experts will respond with clear, evidence-based answers. Pose your questions and story ideas!

  • Greenland Glaciers Retreating Faster than Any Time in Past 9,500 Years

    Greenland Glaciers Retreating Faster than Any Time in Past 9,500 Years

    A new study uses sediment cores to track the expansion and retreat of glaciers through time, and finds that they are retreating quickly and are more sensitive to temperature change than previously realized.

  • Study Undercuts Idea That ‘Medieval Warm Period’ Was Global

    Vikings May Not Have Colonized Greenland in Nice Weather

  • India Steps Up on Climate Change

    India Steps Up on Climate Change

    As a nation still in its developing phase, with 1.25 billion citizens and counting, India can’t afford to forego even part of its industrial progress. But we also cannot go on developing without taking into account the emissions produced by industries that are major contributors to global warming.

  • 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,…

  • Watch and Learn: Climate Countdown

    Watch and Learn: Climate Countdown

    Wondering what’s going on in Paris? And why you should care? A team of young people working on climate issues from many perspectives—policy, science, media, activism—have created Climate Countdown, a video web series that follows the people who are crafting paths toward a meaningful climate agreement at the Paris climate summit.

  • From Waterloo to Paris: Students Serve as Delegates for Kiribati

    From Waterloo to Paris: Students Serve as Delegates for Kiribati

    Students from 28 masters in development practice programs, including the Earth Institute’s Masters in Public Administration-Development Practice at Columbia, are participating in various ways at the climate talks in Paris.

  • From Copenhagen to Paris: Moving From Talk to Action on Climate Change

    Globally, individual nations have volunteered greenhouse gas reduction targets in anticipation of the Paris meetings. Unlike Copenhagen, where calls for mandatory reductions and transfer payments to the developing world caused the collapse of any potential agreements, the world community seems more realistic as it approaches the Paris meetings.

  • Growing the Global Economy Without Destroying the Planet

    We need to focus our attention on the existing systems of management and influence now in place and attempt to turn them toward sustainability. This includes national, state and especially local governments, corporations and nonprofit organizations.

  • Six Tough Questions About Climate Change

    Six Tough Questions About Climate Change

    People often ask certain tough questions about climate change— about the costs of cutting carbon emissions, the feasibility of transitioning to renewable energy, and whether it’s already too late to do anything about climate change. Laura Segafredo, manager of the Deep Decarbonization Pathways Project, answers these questions.