public health5
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Changing Environmental Values and a Changing World
I believe that concern over tap water is part of the growing movement for locally-sourced food, physical fitness, and what has been termed “wellness.” The underlying source of support for environmental protection is a growing understanding of the relationship between a toxic environment and human health.
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Miracle on the Potomac: The New Bipartisan Law Regulating Toxics
The new law is far from perfect, but it is a major improvement over the ineffectual 1976 Toxic Substances Control Act. Under that law, only five of the over 80,000 chemicals now in use have been banned or substantially restricted in use.
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A Major Source of Air Pollution: Farms
Global Study Shows How Agriculture Interacts With Industry
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How Well is the World Protecting Ecosystems and Human Health?
The new global environmental report card is out. The 2016 Environmental Performance Index graded 180 countries on how well they are protecting human health and their ecosystems. While the world is making progress in some areas, it is seriously falling behind in others.

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





