Jun 13, 2024
Do you know how much your groceries add to your carbon footprint? Experts estimate that a third of the planet-warming greenhouse gases produced by humans each year come from growing and shipping our food. A new study published in the journal Nature Food suggests we could cut those emissions by 26% if we made some simple switches at the store.
Dr. Allison Gaines told Phys.org people can reduce their carbon footprint "by switching like-for-like products." She's the lead author of the study.
Gaines studied the environmental impact of foods by placing them in groups. She then looked at the emissions produced by products in the same group. For example, some loaves of bread are shipped a long way. And some are produced from wheat farmed by trucks that spew carbon into the air. Buying a loaf from a local source could lower a person’s carbon footprint in a big way. And a switch between groups can be even bigger. Not eating meat could reduce emissions by up to 71%, Gaines found.
Of course, buyers don’t know what they don’t know. Without access to emissions data, shoppers can’t make an informed choice. That’s why Gaines’ team is calling for an environmental rating on all store products. It would be like the labels for ingredients and calories.
"There is currently no standardized framework,” Bruce Neal told phys.org. He's the executive director of the George Institute Australia. He went on to add that this research could give buyers the power to make a real impact.
Reflect: How can the choices we make when buying food help take care of our planet?
Gif of produce at grocery store from GIPHY.
Presenting a Climate Solution
This classroom activity has students create a poster about one of eleven proposed climate solutions, including reducing food waste, educating girls, plant-based meats, and more.
Planet-Friendly Foods for Gassy Cows?
This resource explores a silvopastoral farm in Colombia that uses sustainable cattle ranching approaches to reduce the negative impacts on the environment.
Earth: Apple of Our Eye
This lesson plan on food production and agriculture centers around a demonstration that uses an apple to show students the small fraction of Earth's land that can be used for farming, followed by discussion questions and a follow-up activity.