State of the Planet

News from the Columbia Climate School

water matters16

  • Using Tree Rings to Understand and Protect New York’s Water

    Using Tree Rings to Understand and Protect New York’s Water

    The upper Delaware River Basin System is one of the largest water supply systems for the city of New York. Today our understanding and management of these reservoir systems is based on the short historical records of data, which are limited. Scientists need to find a way to look further into the past. One of…

  • Pharmaceuticals in the Water Supply: Is this a threat?

    Pharmaceuticals in the Water Supply: Is this a threat?

    According to the GAO, a “study focused on untreated source water used by public drinking water systems” found that 53 of 74 sites tested had at least one pharmaceutical present, and in 2010 the EPA showed that 54 active pharmaceutical ingredients and 10 metabolites, the product of biological changes to a chemical, had been found…

  • In Dry Texas, Recycled Water Looks Better and Better

    In Dry Texas, Recycled Water Looks Better and Better

    As the drought in Texas continues with no end in sight, some cities are turning to innovative water alternatives in an attempt to maintain quality of life as they know it. The new mindset includes viewing waste water as an asset.

  • Mosquito Traps for the Future

    Mosquito Traps for the Future

    The New York Times reported yesterday on a new, simple approach to mosquito control that—if accurate–could be a game changer in the world’s efforts to eradicate mosquito-borne diseases.

  • Community Associations and Sustainable Development in Rural Brazil

    Community Associations and Sustainable Development in Rural Brazil

    After spending two days back in the big city of Fortaleza learning about the finer points of water management in the state of Ceará, I’ve returned to the rural municipality of Milhã, ground zero for the Columbia Water Center’s project to improve water access in Brazil’s semi-arid sertão region. Our group is now just three:…

  • Can Canadian Water Slake America’s Need for Power?

    Can Canadian Water Slake America’s Need for Power?

    At a time when the world is abuzz with talk of reducing carbon dioxide emissions to stem the tide of climate change, Canada’s surfeit of hydropower production appears an attractive option to people south of the border who still rely on fossil fuel-generated electricity.

  • Water Problems Are Solvable: The International Water Forum at the UN

    Water Problems Are Solvable: The International Water Forum at the UN

    Water problems are solvable. None of the many challenges are outside of the ability of human-kind to respond and resolve. As with so many things, political will and money are needed, but the International Water Forum at the UN took it further; the general public has to understand and care before the political will and…

  • Bringing Water to Rural Communities in Brazil

    Bringing Water to Rural Communities in Brazil

    Though Portuguese settlers and Brazilians have lived in the sertão since the 16th century, it has never been an easy place to thrive. The primary reason is water.

  • Water, Oil, Food – A Crisis for Saudi Arabia and the World

    Water, Oil, Food – A Crisis for Saudi Arabia and the World

    A water crisis is unfolding in Saudi Arabia that could have profound implications for both the Saudi people and for the rest of the world.

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.

  • Using Tree Rings to Understand and Protect New York’s Water

    Using Tree Rings to Understand and Protect New York’s Water

    The upper Delaware River Basin System is one of the largest water supply systems for the city of New York. Today our understanding and management of these reservoir systems is based on the short historical records of data, which are limited. Scientists need to find a way to look further into the past. One of…

  • Pharmaceuticals in the Water Supply: Is this a threat?

    Pharmaceuticals in the Water Supply: Is this a threat?

    According to the GAO, a “study focused on untreated source water used by public drinking water systems” found that 53 of 74 sites tested had at least one pharmaceutical present, and in 2010 the EPA showed that 54 active pharmaceutical ingredients and 10 metabolites, the product of biological changes to a chemical, had been found…

  • In Dry Texas, Recycled Water Looks Better and Better

    In Dry Texas, Recycled Water Looks Better and Better

    As the drought in Texas continues with no end in sight, some cities are turning to innovative water alternatives in an attempt to maintain quality of life as they know it. The new mindset includes viewing waste water as an asset.

  • Mosquito Traps for the Future

    Mosquito Traps for the Future

    The New York Times reported yesterday on a new, simple approach to mosquito control that—if accurate–could be a game changer in the world’s efforts to eradicate mosquito-borne diseases.

  • Community Associations and Sustainable Development in Rural Brazil

    Community Associations and Sustainable Development in Rural Brazil

    After spending two days back in the big city of Fortaleza learning about the finer points of water management in the state of Ceará, I’ve returned to the rural municipality of Milhã, ground zero for the Columbia Water Center’s project to improve water access in Brazil’s semi-arid sertão region. Our group is now just three:…

  • Can Canadian Water Slake America’s Need for Power?

    Can Canadian Water Slake America’s Need for Power?

    At a time when the world is abuzz with talk of reducing carbon dioxide emissions to stem the tide of climate change, Canada’s surfeit of hydropower production appears an attractive option to people south of the border who still rely on fossil fuel-generated electricity.

  • Water Problems Are Solvable: The International Water Forum at the UN

    Water Problems Are Solvable: The International Water Forum at the UN

    Water problems are solvable. None of the many challenges are outside of the ability of human-kind to respond and resolve. As with so many things, political will and money are needed, but the International Water Forum at the UN took it further; the general public has to understand and care before the political will and…

  • Bringing Water to Rural Communities in Brazil

    Bringing Water to Rural Communities in Brazil

    Though Portuguese settlers and Brazilians have lived in the sertão since the 16th century, it has never been an easy place to thrive. The primary reason is water.

  • Water, Oil, Food – A Crisis for Saudi Arabia and the World

    Water, Oil, Food – A Crisis for Saudi Arabia and the World

    A water crisis is unfolding in Saudi Arabia that could have profound implications for both the Saudi people and for the rest of the world.