fertilizer
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Is Organic Food Really Better for the Environment?
Recent research suggests it might not be as sustainable as we might think, but it’s complicated.
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Phosphorus: Essential to Life—Are We Running Out?
Phosphorus is essential to human health and vital for food production. But are we using up phosphorus faster than we can economically extract it?
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
