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Declining Biodiversity in Wild Amazon Fisheries Threatens Human Diet
New research suggests that declines in wild fish species may compromise nutrition in an already poor region. Substituting cultivated species may not help.
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La Pérdida de la Biodiversidad en las Pesquerías continentales de la Amazonía Amenaza la Dieta Humana
Una nueva investigación sugiere que una disminución de especies de peces silvestres puede comprometer la nutrición en una región que ya padece de inseguridad alimentaria. Es posible que la sustitución de especies cultivadas no ayude.
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Sustainability Certification in Aquaculture: Put Your Money Where Your Mouth Is?
Should we certify aquaculture? A look at mounting challenges in the push for sustainable seafood.
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Removing Dams and Restoring Rivers
On Sept. 17, 2011, the removal of two large hydroelectric dams on the Elwha River in Washington State, which have blocked migrating salmon from reaching their spawning grounds for almost 100 years, will begin. While this is the largest dam removal project in U.S. history, it is just one of several major dam removals planned…
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Drugs in Our Drinking Water: An Update
The 2008 Associated Press report that drugs had been found in the drinking water supplies of 41 million Americans was alarming. What is the state of pharmaceuticals in our water today?
COP31, the 2026 United Nations Climate Change Conference, aims to advance dialogue, strengthen consensus, and accelerate climate action on a global scale. From November 9–20, 2026 in Antalya, Türkiye, heads of state, ministers, scientists, business leaders, and civil society will gather to advance efforts in emission targets, climate finance, and adaptation and resilience. Once again, our experts, students, and global thought leaders from Columbia Climate School and across Columbia University are contributing to key events, sharing insights, and helping shape the dialogue toward ambitious, science-based solutions. Learn More
