Did you know that one-third of food is wasted, somewhere between the farm and the plate? This is not only inefficient—it’s unjust and immoral, as 1 in 10 people in the world are malnourished (suffering from hunger and food insecurity), and food waste is also one of the major contributors to climate change. Most of the methane emissions from landfills are caused by food waste (AKA “organic waste”). And methane is one of the worst, most potent greenhouse gas pollutants.
Project Drawdown’s research has identified Reduced Food Waste as one of the highest impact climate solutions. (It’s ranked #1 or #4 in their list of solutions, depending on which global-heating timeline scenarioyou select.)
Reducing food waste is not only one of the best ways to help reduce greenhouse gas emissions; it’s also one of the easiest ways. And it shouldn’t cost you anything; in fact, reducing food waste should save you money. It’s the “low hanging fruit,” so to speak, of climate solutions.
Of course, like most climate solutions, the biggest changes need to happen at a systemic level. Tons of food waste happens before it ever makes it to consumers, in the agricultural and food retail industries and along the whole supply chain. Often, a sizable percentage of produce is never even harvested in the fields where it’s grown, or it gets thrown out during processing or in restaurants, grocery stores, and cafeterias, sometimes due to its imperfect appearance or over-ripeness (or due to expiration dates, for packaged foods).
Farmers can learn about ways to recover more of their produce that is lost/wasted, through the resources and services of experts like Lisa K. Johnson. They could find local gleaning groups that will come pick any excess crops; or donate them directly to soup kitchens, food banks, or to people in need. Surplus can also be distributed for use as animal feed, compost, or industrial inputs, or even converted to energy using anaerobic digesters.
The rest of us can ask the owners or managers of our grocery stores (and local restaurants and school cafeterias) what they do with their excess food, and nicely ask them to donate their extra produce (before it goes bad)—and any packaged foods that are nearing their expiration dates—to local food pantries and/or overstock stores. In 2016, France passed a law requiring supermarkets to donate (rather than throw out) all unused food products.
There are also numerous ways that each of us can help reduce (as well as reuse/repurpose or recycle/compost) our own food waste. Some are these strategies are very basic and may seem obvious, while others you might not have considered, or they might take a little more knowledge or effort:
- Don’t buy more perishable foods (i.e., produce, meat, dairy, fish, bread, or anything you need to refrigerate) than your household is likely to be able to eat before the items go bad. (For example, don’t buy produce in bulk quantities unless you know you can use or share all of it in time.) Avoiding buying too much—and using up what you have—may seem like no-brainers, but they do require some thought and planning. And it’s easier not to over-shop if you have a fresh-foods market a short distance from your home so you can go there more often. Many fruits and vegetables will stay fresh longer if you keep them in the refrigerator, and breads and many other foods can be stored in the freezer for later use. One way to help make sure you use up what you have is to place the items you need to eat first (including leftovers) in the most visible parts of your fridge where you can’t forget about them, rather than pushed back and hidden behind other items that will last longer. If you can tell that you have gotten more than you’re going to be able to use of something, give the surplus to friends/family who can definitely use it, or donate it to a local food bank/pantry (or soup kitchen or shelter) while it is still fresh enough to eat.
- It’s widely known now that the “Best By” dates on most packaged foods are not expiration dates, and those dates can often be “taken with a grain of salt.” Here are some guidelines on how long various foods will last before they actually go bad. If you have packaged foods that you may not be able to use before they approach their expiration dates, donate those to a food pantry or the like before they expire.
- Don’t shy away from buying fruits and vegetables that are small or strangely shaped or slightly imperfect, or packaged foods in boxes/containers that are slightly dented or misshapen. Check out these companies that sell such foods at a discount: Imperfect Foods, Ugly Foods, and Misfits Market.
- Buy some of your food from overstock stores, like Grocery Outlet (or Big Lots), which help keep overstocked (or close-out) products from being thrown out. This is another great way to save money.
- You can find many great ideas for ways to reuse/repurpose your food scraps and leftovers. Just do a web search for phrases like “cooking with food scraps,” “recipes reusing food scraps,” or “creative ways to use food scraps or leftovers” and you’ll see so many ingenious suggestions. (People who have lived in poverty have learned some of these tricks by necessity.) Any remaining non-meat food scraps that you can’t use you can give to people who have chickens or other animals that would be happy to eat them (or else compost the unusable scraps: see the last item, below).
- When you eat at restaurants, if the restaurant offers huge portions of food that are more than you can/should eat, consider sharing those dishes. If you have leftovers, only have those put in a take-out container if you’re fairly certain that someone in your household will finish that food later, or if you know you can give it to a homeless person right away. (Otherwise, you’re just adding packaging waste to more food waste.)
- If you have a large garden or fruit or nut trees that produce more than your family can eat, offer the extra bounty to neighbors and friends, or post something on NextDoor.com to offer it to other people, inviting them to come pick/harvest and take it; or if you have a lot of surplus, you could set up a little farm stand/free food pantry box (or add it to a free library box), or contact a local gleaning group (if there’s no local group shown on the map at that link, do a web search to try to find ones in your area, or ask around on your NextDoor.com site or other local social media groups). If you have a bunch of fallen, over-ripe, or wormy fruit from your fruit trees, you could offer that fruit to people who raise pigs or chickens or who have lots of deer or other wildlife on a rural property.
- Consider volunteering with a local gleaning group. Members of your group could contact local farms to see if they have excess crops they’d like your group to harvest and give to those in need.
- Composting options: 1) If your town has a curbside composting program that collects food waste, you should be able to put your remaining food waste into your curbside compost bin. (Just bear in mind that, in some areas, the compost gets transported to another county, which is not efficient in terms of transportation emissions.) Some cities or regions also have composting services that companies or households can hire to pick up their food scraps/waste. 2) You could collect and give your food waste to a neighbor or local farmer who composts on their land and uses the compost to improve their soil. 3) Or you can compost your food waste on your own property, if you have the space and an appropriate spot for that (where it won’t be likely to attract raccoons or rats or create a nuisance for neighbors). You can find zillions of resources and tips online about how to do home composting. One of the easiest ways to do it (without having to buy or build a compost bin) is referred to as “composting in place“: just digging a small hole right in your garden and putting your food waste in the hole, as it’s generated, and covering it up for it to decompose and improve your soil.
One of the other top climate solutions for reduce greenhouse gas emissions is also food-related: Shifting to a more plant-based diet, i.e., eating less (or no) meat and dairy, which also happens to be good for our health—as well as the welfare of animals—and it can also save you money. Online, it’s easy to find many delicious recipes for meatless/vegetarian or dairy-free/vegan dishes, as well as vegetarian and vegan restaurants near you, and tons of information and resources on protein-rich, plant-based diets. And if you do sometimes eat meat or dairy foods, be sure to make an extra effort not to throw out (waste) any of those, for the sake of the animals they came from, and also because meat and dairy production account for such a huge amount of land use (and deforestation), as well as water use.
Resources for more information on food waste reduction:
- “The Global Benefits of Reducing Food Loss and Waste, and How to Do It,” by the World Resources Institute, April 2023
- “Methane from landfills is another climate emergency. Here’s how to fix it.” by Gina McCarthy, The Hill, November 2023
- “Tackling food waste,” Talking Climate newsletter, by Katherine Hayhoe, October 2023
- EPA’s Sustainable Management of Food site
- Food Waste Reduction Alliance, an industry-led initiative
(and their list of Resources, which you can search by category) - National Gleaning Project (includes a map of gleaning and food recovery organizations in the U.S.)
- Lisa K. Johnson, expert and consultant on food recovery: reducing food loss in the agriculture/food system
- Project Drawdown’s Reduced Food Waste solutions page
Also do a search for organizations and companies in your city/county/state that focus on “food waste” or “food recovery” or “zero waste” to find out about local efforts and opportunities.
Related posts:
- Top 15 Most Effective Climate Solutions, per Project Drawdown
- Sustainable Agriculture, Farming, Gardening, and Food-Related Resources
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