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The Conversation
The Conversation
Environment
Hanqin Tian, Director and Institute Professor, Center for Earth System Science and Global Sustainability, Schiller Institute for Integrated Science and Society, Boston College

Food has a climate problem: Nitrous oxide emissions are accelerating with growing demand for fertilizer and meat – but there are solutions

Fertilizer is a leading source of emissions of nitrous oxide, a planet-warming greenhouse gas. pixdeluxe/E+ via Getty Images

Food’s role in climate change has emerged as one of the defining challenges of our time. The journey of a steak, fruit or salad from the vast expanses of agricultural lands to the plates on our tables leaves a significant footprint on the environment.

At the heart of this challenge is the prodigious use of fertilizers and a growing global population’s increasing demand for meat.

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