The human acceleration of the nitrogen cycle did not occur in isolation, as humans have altered the cycles of many other elements as well, most notably those of phosphorus, sulphur and carbon 1.Of ...

While nitrogen within terrestrial soils and vegetation has largely been thought to come from the atmosphere, a new study points to a previously underappreciated, additional source: weathered bedrock.

The livestock sector currently emits around 65 trillion grams (teragrams) of nitrogen a year - equivalent to one-third of current human-induced nitrogen emissions.

The emissions from livestock farming amount to about 65 teragrams (Tg) of nitrogen a year. That means meat and dairy production alone breaches the lower limit of the 62 to 82 Tg a year considered ...

Asian emissions of nitrogen now total just over 10 teragrams per year, but models suggest that the continent’s contribution could rise to 31.9 teragrams by the year 2030, says Galanter.