Solving the nitrogen puzzle: Measuring groundwater pollution from agriculture
For years it’s been relatively easy to measure pollution from, say, a factory. At a factory, there might be just one pipe of waste to measure. Easy enough. But what about a farm? We might not typically think of farms as sources of pollution. But they can have big impacts on the land over time. Unlike at a factory, the waste filters slowly through soil across the whole plot of land. This waste—excess nutrients from fertilizer—can eventually reach groundwater.
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