State of the Planet

News from the Columbia Climate School

Water47

  • The Push to Dam China’s Rivers

    The Push to Dam China’s Rivers

    China already has half the world’s large hydroelectric dams (25,800), but along the Yangtze River and its tributaries, 100 large dams are either being planned or built and 43 additional dams are in the works.

  • Giving the Earth a Cool Shower–Is Massive Irrigation Hiding the Greenhouse Effect Around the World?

    Giving the Earth a Cool Shower–Is Massive Irrigation Hiding the Greenhouse Effect Around the World?

    According to research published in Climate Dynamics by Benjamin I. Cook, Michael Puma and Nir Krakauer, it is possible that massive irrigation is masking expected warming trends from Greenhouse Gasses .

  • Attack of the Warzone Water Bottles

    Attack of the Warzone Water Bottles

    Using bottled water in war zones uses oil and pollutes the environment. But Defense officials are looking to move toward sustainability.

  • Ohio and Mississippi River Floods in Photos

    Ohio and Mississippi River Floods in Photos

    Heavy rains over the American South and Midwest have deluged the region, causing unprecedented flood damage. View photos of the event from around the web.

  • Post bin Laden, Working Toward Afghanistan’s Water Security

    Post bin Laden, Working Toward Afghanistan’s Water Security

    Osama bin Laden is history, but decades of war and civil strife pose challenges to Afghanistan’s water infrastructure.

  • Earth, Water and Sky –A Conversation with Pierre Gentine, a new Columbia Water Center Scientist

    Earth, Water and Sky –A Conversation with Pierre Gentine, a new Columbia Water Center Scientist

    Columbia Water Center welcomes Pierre Gentine, Assistant Professor of Applied Mathematics at Columbia University’s School of Engineering and Applied Science, as an affiliate researcher. Pierre’s groundbreaking research on the way soil moisture interacts with the atmosphere has implications for many of CWCs initiatives—from developing more efficient irrigation systems, to water resource management, to understanding floods.…

  • Clean Water vs. Cheap Energy: Can We Have Both?

    Clean Water vs. Cheap Energy: Can We Have Both?

    The social fabric of a water quality debate: Anti-fracking protesters converge on Albany… again. A battle of wills between advocates of clean water and cheap energy ensues.

  • How China Is Dealing With Its Water Crisis

    How China Is Dealing With Its Water Crisis

    Recently I traveled to Southeast Yunnan in China to see the spectacular Yuan Yang rice terraces, flooded and ready for spring planting. Rice is a very water-hungry crop and China is the world’s largest producer of rice and grain. Yet China is facing a perilous water crisis.

  • Reusing Dirty Water

    Reusing Dirty Water

    Columbia Water Center guest lecturer Raymond Farinato talks about increasing water supply by reusing wastewater in industrial applications.

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 Push to Dam China’s Rivers

    The Push to Dam China’s Rivers

    China already has half the world’s large hydroelectric dams (25,800), but along the Yangtze River and its tributaries, 100 large dams are either being planned or built and 43 additional dams are in the works.

  • Giving the Earth a Cool Shower–Is Massive Irrigation Hiding the Greenhouse Effect Around the World?

    Giving the Earth a Cool Shower–Is Massive Irrigation Hiding the Greenhouse Effect Around the World?

    According to research published in Climate Dynamics by Benjamin I. Cook, Michael Puma and Nir Krakauer, it is possible that massive irrigation is masking expected warming trends from Greenhouse Gasses .

  • Attack of the Warzone Water Bottles

    Attack of the Warzone Water Bottles

    Using bottled water in war zones uses oil and pollutes the environment. But Defense officials are looking to move toward sustainability.

  • Ohio and Mississippi River Floods in Photos

    Ohio and Mississippi River Floods in Photos

    Heavy rains over the American South and Midwest have deluged the region, causing unprecedented flood damage. View photos of the event from around the web.

  • Post bin Laden, Working Toward Afghanistan’s Water Security

    Post bin Laden, Working Toward Afghanistan’s Water Security

    Osama bin Laden is history, but decades of war and civil strife pose challenges to Afghanistan’s water infrastructure.

  • Earth, Water and Sky –A Conversation with Pierre Gentine, a new Columbia Water Center Scientist

    Earth, Water and Sky –A Conversation with Pierre Gentine, a new Columbia Water Center Scientist

    Columbia Water Center welcomes Pierre Gentine, Assistant Professor of Applied Mathematics at Columbia University’s School of Engineering and Applied Science, as an affiliate researcher. Pierre’s groundbreaking research on the way soil moisture interacts with the atmosphere has implications for many of CWCs initiatives—from developing more efficient irrigation systems, to water resource management, to understanding floods.…

  • Clean Water vs. Cheap Energy: Can We Have Both?

    Clean Water vs. Cheap Energy: Can We Have Both?

    The social fabric of a water quality debate: Anti-fracking protesters converge on Albany… again. A battle of wills between advocates of clean water and cheap energy ensues.

  • How China Is Dealing With Its Water Crisis

    How China Is Dealing With Its Water Crisis

    Recently I traveled to Southeast Yunnan in China to see the spectacular Yuan Yang rice terraces, flooded and ready for spring planting. Rice is a very water-hungry crop and China is the world’s largest producer of rice and grain. Yet China is facing a perilous water crisis.

  • Reusing Dirty Water

    Reusing Dirty Water

    Columbia Water Center guest lecturer Raymond Farinato talks about increasing water supply by reusing wastewater in industrial applications.