Greenhouse gases from rotting and otherwise discarded food account for about half of all emissions from the global food system, according to a new study. According to the Food and Agriculture Organization of the United Nations (FAO), approximately one third (pdf) of all food produced is lost or wasted each year. One of the UN Sustainable Development Goals is to halve global food waste by 2030 and reduce food losses in production and supply. The study assesses the emissions of food loss and waste at every link in the supply chain \u2013 from the moment food is harvested to the moment it ends up in landfill or compost. It found that in 2017 global food waste caused 9.3 billion tonnes of CO2 equivalent emissions (GtCO2e), which is about as much as the combined US and EU emissions in the same year. Along with carbon emissions, this comes at a time when more than 800 million people will be affected by hunger in 2021, according to the UN. A new study published in the journal Nature Food also explores several ways to reduce emissions from food waste, such as cutting meat consumption in half and composting instead of landfilling.<\/p>\n
Where does food waste come from?<\/p>\n
The global food system produces about a third of total annual greenhouse gas emissions. A new study reports that food waste causes about half of these emissions. Location, socio-economic differences and other factors play a role in the level of food waste emissions around the world. For example, developed countries generally have more advanced and environmentally friendly technologies \u2013 which can lead to lower emissions from waste management, the study said.<\/p>\n
<\/p>\n
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