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N-wrecked

June 11, 2024

N-wrecked The way that humans have messed with the Earth’s carbon cycle rightly figures as planetary eco-problem No.1 in public debate, but the way we’ve messed with its nitrogen cycle probably ought to get more attention than it does. In the former case, farming often gets a bit too much of the blame in my […]

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Nitrogen glut: Too much of a good thing is deadly for the biosphere

November 16, 2019

Nitrogen glut: Too much of a good thing is deadly for the biosphere Abbreviations in this articleCBD UN Convention on Biological Diversity.CO2 carbon dioxide.N nitrogen.N2 dinitrogen (inert nitrogen gas). N2O nitrous oxide.NH3 ammonia.NO, NO2, NOx nitrous oxides.NO3 nitrate.Nr reactive nitrogen.O3 ozone.P phosphorous.PM particulate matter Part Two of Ian Angus’s examination of the disruption of the global nitrogen cycle by an economic system that values profits more than life itself. […]

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Beware of the N-bomb

July 28, 2019

Beware of the N-bomb There are good, and frightening, reasons to closely follow the changes in the nitrogen cycle. We should not be surprised if the effects and costs of disturbing it turn out to be as dramatic as those for the carbon cycle. In addition, greenhouse gas emissions from nitrogen fertilizers are around 3% […]

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Olduvai IV: Courage
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Olduvai II: Exodus
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