Field of Science

How did our nitrogen cycle evolve?

In trying to feed our growing population, we now add twice as much nitrogen to the soil (after chemically ‘fixing’ it to make fertilisers) as microbes fix from the atmosphere. Human activity has skewed the balance in the earth’s nitrogen cycle. But how did the modern nitrogen cycle evolve? A recent review published in Science tries to answer that question and make suggestions about the future. more.

Canfield, D., Glazer, A., & Falkowski, P. (2010). The Evolution and Future of Earth's Nitrogen Cycle Science, 330 (6001), 192-196 DOI: 10.1126/science.1186120

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