With humans having an increasing impact on the planet, the interactions between the nitrogen cycle, the carbon cycle ... amounted to more than 160 teragrams (Tg) N per year (Fig.

The amount of nitrogen pollution emitted just by global livestock farming is more than the planet can cope with, prompting scientists to say we need to eat less meat and dairy produce. Fertilisers ...

Worldwide, more than 40 trillion grams (40 teragrams) of nitrogen per year enter the atmosphere as part of nitrogen oxides and other nitrogen-containing gases, says Meredith Galanter, an ...