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The United Nations estimates that up to 10% of all human-produced greenhouse gases are generated by food loss and waste. That's nearly five times the emissions from the aviation industry.
By addressing food loss and waste, greenhouse gas emission mitigation is also addressed. By only focusing on dairy systems of 20 value chains in 12 countries, food loss and waste could be reduced by 4-10%. [75] These numbers are impactful and would mitigate greenhouse gas emissions while still feeding the population. [75]
In terms of greenhouse gas (GHG) emissions associated with food loss and waste, the biggest contribution is again from cereals and pulses (more than 60 percent), followed by roots, tubers and oil-bearing crops. [12]
According to the Food and Agriculture Organization (FAO), food waste is responsible for 8 percent of global human-made greenhouse gas emissions. [197] The FAO concludes that nearly 30 percent of all available agricultural land in the world – 1.4 billion hectares – is used for produced but uneaten food.
Food production is a big contributor to climate change, so it’s critically important to be able to measure greenhouse gas emissions from the food sector accurately. In a new study, we show that
From the decrease in non-agricultural GHG emissions during COVID-19, the percent of the USA's GHG emissions from livestock increased from 2.6% [22] to about 5%, [23] [24] which is a smaller percentage than many other countries likely because the USA has more greenhouse gas emissions from vehicles, machines, and factories.
One of the more fruitful fields of work is food waste—when deposited in landfills, food waste produces the greenhouse gas methane and other toxic compounds that can be dangerous to humans and local ecosystems. [11] Landfill gas utilization and municipal composting can capture and use the organic nutrients. [11]
The remaining material, rich in nitrogen and phosphorus, can be used as natural fertilizer rather than the usual greenhouse gas-emitting synthetic kind. The dry composting method will be familiar ...
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