State of the Planet

News from the Columbia Climate School

fresh water2

  • Peak Ecological Water

    ‘Peak ecological water’ is the point at which so much water is being diverted from the environment for human use, that the ecosystem can no longer function normally. It can even get to the point that an ecosystem is irreversibly damaged, and there are estimates that humans already divert almost 50% of all accessible freshwater…

Earth Month Graphic Collage: "Our Power, Our Planet - April 2025"

The first Earth Day in 1970 ignited a movement to stop polluting our planet. This Earth Month, 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.

  • Peak Ecological Water

    ‘Peak ecological water’ is the point at which so much water is being diverted from the environment for human use, that the ecosystem can no longer function normally. It can even get to the point that an ecosystem is irreversibly damaged, and there are estimates that humans already divert almost 50% of all accessible freshwater…