State of the Planet

News from the Columbia Climate School

Pollution3

  • The Pope’s Challenge on Climate Change

    The Pope’s Challenge on Climate Change

    Pope Francis’s broad-ranging encyclical warns that we are destroying our common home and face an immense and urgent challenge to protect it. But it goes far beyond just the subject of climate change, calling for a holistic and sustainable future.

  • Spring Courses in Conservation, Ecology & Policy

    Spring Courses in Conservation, Ecology & Policy

    The Earth Institute Center for Environmental Sustainability (EICES) at Columbia University provides executive training in environmental sustainability through courses in science, economics and policy. We invite you to join our leading experts and practitioners, strengthen your understanding of human-ecosystem interactions, and become an effective environmental leader and decision-maker.

  • Nature’s Toxic Crusaders

    Nature’s Toxic Crusaders

    Can mushrooms help clean up oil spills? Can oysters filter sewage pollution? Industrial waste is being injected into the planet’s soil and water as a result of human activity. Pioneers in the field of conservation and sustainability are employing nature’s own biological task force to help clean up.

  • Ripple Effect Author Talks Efficiency; Cleanup

    Ripple Effect Author Talks Efficiency; Cleanup

    The outlook for global water is bleak, but Alex Prud’Homme still believes in the power of human ingenuity.

  • Paulie, Jimmy and Vinny on NYC’s Water Future

    Paulie, Jimmy and Vinny on NYC’s Water Future

    New York City’s trio of water and sewer czars, explain the reasons behind rising rates.

  • A Solution to the Problem of Lawns?

    A Solution to the Problem of Lawns?

    Given the growing intensity of the global water crisis, to spend such enormous amounts of water on something that for practical purposes does little more than enslave millions of American homeowners by chaining them to their lawnmowers and sprinklers every Saturday…

  • Changing Litterbugs One Wave at a Time

    Changing Litterbugs One Wave at a Time

    As the mid-Pacific trash island grows, forces are at work to change people’s minds about how they may be adding to it.

  • Our Oceans: A Plastic Soup

    Our Oceans: A Plastic Soup

    “Humanity’s plastic footprint is probably more dangerous than its carbon footprint,” said Captain Charles Moore, who, in 1997, discovered the Great Pacific Garbage Patch. Its name is misleading because the huge expanse of floating marine debris is actually more like a soup of confetti-sized plastic bits, produced by the runoff of our throwaway lifestyle that…

  • Protecting Our Waterways: The Waterkeeper Alliance

    Protecting Our Waterways: The Waterkeeper Alliance

    At any given time, there are dedicated environmentalists around the U.S. working to protect our waterways.These “keepers” are all members of the Waterkeeper Alliance (WKA), an organization of over 200 keepers globally, defending their communities’ rights to clean water.

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.

  • The Pope’s Challenge on Climate Change

    The Pope’s Challenge on Climate Change

    Pope Francis’s broad-ranging encyclical warns that we are destroying our common home and face an immense and urgent challenge to protect it. But it goes far beyond just the subject of climate change, calling for a holistic and sustainable future.

  • Spring Courses in Conservation, Ecology & Policy

    Spring Courses in Conservation, Ecology & Policy

    The Earth Institute Center for Environmental Sustainability (EICES) at Columbia University provides executive training in environmental sustainability through courses in science, economics and policy. We invite you to join our leading experts and practitioners, strengthen your understanding of human-ecosystem interactions, and become an effective environmental leader and decision-maker.

  • Nature’s Toxic Crusaders

    Nature’s Toxic Crusaders

    Can mushrooms help clean up oil spills? Can oysters filter sewage pollution? Industrial waste is being injected into the planet’s soil and water as a result of human activity. Pioneers in the field of conservation and sustainability are employing nature’s own biological task force to help clean up.

  • Ripple Effect Author Talks Efficiency; Cleanup

    Ripple Effect Author Talks Efficiency; Cleanup

    The outlook for global water is bleak, but Alex Prud’Homme still believes in the power of human ingenuity.

  • Paulie, Jimmy and Vinny on NYC’s Water Future

    Paulie, Jimmy and Vinny on NYC’s Water Future

    New York City’s trio of water and sewer czars, explain the reasons behind rising rates.

  • A Solution to the Problem of Lawns?

    A Solution to the Problem of Lawns?

    Given the growing intensity of the global water crisis, to spend such enormous amounts of water on something that for practical purposes does little more than enslave millions of American homeowners by chaining them to their lawnmowers and sprinklers every Saturday…

  • Changing Litterbugs One Wave at a Time

    Changing Litterbugs One Wave at a Time

    As the mid-Pacific trash island grows, forces are at work to change people’s minds about how they may be adding to it.

  • Our Oceans: A Plastic Soup

    Our Oceans: A Plastic Soup

    “Humanity’s plastic footprint is probably more dangerous than its carbon footprint,” said Captain Charles Moore, who, in 1997, discovered the Great Pacific Garbage Patch. Its name is misleading because the huge expanse of floating marine debris is actually more like a soup of confetti-sized plastic bits, produced by the runoff of our throwaway lifestyle that…

  • Protecting Our Waterways: The Waterkeeper Alliance

    Protecting Our Waterways: The Waterkeeper Alliance

    At any given time, there are dedicated environmentalists around the U.S. working to protect our waterways.These “keepers” are all members of the Waterkeeper Alliance (WKA), an organization of over 200 keepers globally, defending their communities’ rights to clean water.