Knowledge for better food systems

Food’s overlooked air pollution footprint

In this blog post, Dan Blaustein-Rejto of US think-tank the Breakthrough Institute explains that agriculture produces half of air pollution in the United States, mostly through ammonia emissions from livestock and fertilisers. He argues that reducing air pollution from farming - for example through storing manure in covered pits and applying fertiliser more efficiently - would be beneficial for both human health and climate mitigation.

Read the full blog post here. See also the Foodsource chapter An overview of food system challenges.

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North America

North America is the northern subcontinent of the Americas covering about 16.5% of the Earth's land area. This large continent has a range of climates spanning Greenland’s permanent ice sheet and the dry deserts of Arizona. Both Canada and the USA are major food producers and some of the largest food exporters in the world. Industrial farms are the norm in North America, with high yields relative to other regions and only 2% of the population involved in agriculture.

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