https://phys.org/news/2018-07-youve-heard-carbon-footprint-nitrogen.html

Our earlier research showed that Australia has a large nitrogen footprint. At up to 47kg of nitrogen per person each year, Australia is far ahead of the US (28kg per person), the second on the leaderboard of per capita reactive nitrogen emissions. Australians' large nitrogen footprints are created largely by a diet rich in animal protein and high levels of coal use for energy.

Our new research, published in the Journal of Cleaner Production, takes this concept further by measuring the nitrogen footprint of an entire institution, in this case the University of Melbourne.