State of the Planet

News from the Columbia Climate School

water contamination

  • Reducing Arsenic in Drinking Water Cuts Risk of Death, Even After Years of Chronic Exposure

    Reducing Arsenic in Drinking Water Cuts Risk of Death, Even After Years of Chronic Exposure

    Published today in JAMA, a 20-year study of nearly 11,000 adults in Bangladesh found that lowering arsenic levels in drinking water reduced the risk of death from chronic illnesses, compared with continued exposure.

  • Presidential Politics: Water Supply and Contamination

    Presidential Politics: Water Supply and Contamination

    The federal government needs to develop and implement a plan to solve problems with our water infrastructure, pollution and growing scarcity. How will the next president act?

  • Protecting Our Drinking Water

    The reason we have federal water quality standards is to ensure that local economic issues, politics, racism or other factors do not control decisions about water supply. But in Flint, decisions on water supply were not subject to effective federal review.

  • There’s Plenty of Blame for Flint, Michigan’s Water Crisis

    The federal government sets the drinking water standards in America, even though monitoring and administration is delegated to the states. The federal EPA had the authority and responsibility to intervene. The failure in Flint belongs to all of us and it should lead to some hard thinking about the causes of this completely avoidable environmental…

  • Microbeads, Marine Debris, Regulation and the Precautionary Principle

    It is clear that the hunger for economic growth and wealth pushes business and governments to ignore environmental impacts that are considered an inevitable byproduct of development. But this fails to account for the costs that will inevitably be borne when the damage must be cleaned up.

  • EPA Spilled, but Didn’t Dump, the Toxics That Ended up in Colorado’s River

    The short-term, expedient result of ignoring environmental impacts may be greater immediate profit for some, but the long-term impact is higher costs and lower profit, and many of those higher costs must be borne by all of us. Many of the companies that made the mess will be long gone before many of the bills…

  • Revising the Toxic Substances Out-of-Control Act

    An unregulated chemical industry is an invitation for disaster. Fortunately, there is at least one place in America where regulation of toxic chemicals is taken seriously—California (of course).

Photo of the Earth from space with the text "Lamont at AGU25" on top.

AGU25, the premier Earth and space science conference, takes place December 15-19, 2025 in New Orleans, Louisiana. This year’s theme—Where Science Connects Us—puts in focus how science depends on connection, from the lab to the field to the ballot box. Once again, Lamont-Doherty Earth Observatory and Columbia Climate School scientists, experts, students, and educators are playing an active role, sharing our research and helping shape the future of our planet. #AGU25 Learn More

  • Reducing Arsenic in Drinking Water Cuts Risk of Death, Even After Years of Chronic Exposure

    Reducing Arsenic in Drinking Water Cuts Risk of Death, Even After Years of Chronic Exposure

    Published today in JAMA, a 20-year study of nearly 11,000 adults in Bangladesh found that lowering arsenic levels in drinking water reduced the risk of death from chronic illnesses, compared with continued exposure.

  • Presidential Politics: Water Supply and Contamination

    Presidential Politics: Water Supply and Contamination

    The federal government needs to develop and implement a plan to solve problems with our water infrastructure, pollution and growing scarcity. How will the next president act?

  • Protecting Our Drinking Water

    The reason we have federal water quality standards is to ensure that local economic issues, politics, racism or other factors do not control decisions about water supply. But in Flint, decisions on water supply were not subject to effective federal review.

  • There’s Plenty of Blame for Flint, Michigan’s Water Crisis

    The federal government sets the drinking water standards in America, even though monitoring and administration is delegated to the states. The federal EPA had the authority and responsibility to intervene. The failure in Flint belongs to all of us and it should lead to some hard thinking about the causes of this completely avoidable environmental…

  • Microbeads, Marine Debris, Regulation and the Precautionary Principle

    It is clear that the hunger for economic growth and wealth pushes business and governments to ignore environmental impacts that are considered an inevitable byproduct of development. But this fails to account for the costs that will inevitably be borne when the damage must be cleaned up.

  • EPA Spilled, but Didn’t Dump, the Toxics That Ended up in Colorado’s River

    The short-term, expedient result of ignoring environmental impacts may be greater immediate profit for some, but the long-term impact is higher costs and lower profit, and many of those higher costs must be borne by all of us. Many of the companies that made the mess will be long gone before many of the bills…

  • Revising the Toxic Substances Out-of-Control Act

    An unregulated chemical industry is an invitation for disaster. Fortunately, there is at least one place in America where regulation of toxic chemicals is taken seriously—California (of course).