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?

You Asked invites you to share your most pressing questions about climate, science, and sustainability. Lamont-Doherty Earth Observatory and Columbia Climate School experts will respond with clear, evidence-based answers. Pose your questions and story ideas!
