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Food Miles and Hidden Costs

Ages 10–14 25 min read Intermediate

The apple in your lunchbox might have travelled further than you have this year. The garlic in your kitchen almost certainly came from China — over 8,000 kilometres away. Why do we ship food halfway around the world when we can grow it here?

The answer involves subsidies, trade agreements, and hidden costs that change what "cheap" really means.

What Are Food Miles?

"Food miles" measure the distance food travels from where it's produced to your plate. The concept highlights the hidden environmental cost of transporting food around the world.

Where Australia's Food Comes From

Australia grows most of its own food (about 93% by volume), but we import significant amounts of processed food, seafood, and off-season produce:

  • Garlic: ~70% imported from China (8,000+ km)
  • Frozen fish: Often from Vietnam or Thailand (6,000+ km)
  • Olive oil: Mainly Spain and Italy (15,000+ km)
  • Canned tomatoes: Mostly from Italy (15,000+ km)

The Hidden Costs

1. Carbon Emissions

Transporting food by air produces 50 times more emissions than shipping by sea (DEFRA, UK). Fresh berries flown from California have a massive carbon footprint compared to local seasonal berries.

2. Subsidies Distort Prices

European and American farmers receive billions in government subsidies. This makes their exports artificially cheap, undercutting Australian farmers who don't receive the same support.

3. Farmer Income Squeeze

Australian fruit and vegetable growers often receive less than 20 cents per dollar of the retail price (NFF, 2023). The rest goes to transport, packaging, wholesalers, and retailers. When imported food undercuts local prices, Australian farmers suffer.

4. Food Security

Relying on imports means relying on supply chains that can break. During COVID-19, disrupted shipping lanes caused shortages and price spikes globally.

But It's Not All Bad

Food miles alone don't tell the full story. A tomato grown in a heated greenhouse in Victoria might use more energy than one shipped from Queensland. The method of production matters as much as the distance.

Tonight's Question

"At dinner tonight, look at every ingredient. Where did it come from? How far did it travel?"

Check labels. You might be surprised — even "Australian made" products can use imported ingredients.

The Food Detective Challenge

  1. Open your fridge and pantry.
  2. Pick 10 items and check labels for country of origin.
  3. Use Google Maps to measure the distance from that country to your home.
  4. Calculate total food miles for those 10 items.
  5. Research: is there an Australian-made alternative for each imported item?
  6. Visit a local farmers' market and compare.

Go Further

  • Challenge: Try cooking one meal using only locally sourced ingredients (within 100km).
  • Research: What is "food sovereignty"? Should countries aim to produce all their own food?
  • Website: Australian Farmers' Markets Association (farmersmarkets.org.au).
  • Question: Is buying local always better for the environment?

What We Simplified

  • Food miles isn't everything. The type of transport and production method often matter more than distance.
  • Trade helps developing countries. Some nations rely on food exports for income. Buying only local could hurt them.
  • Seasonal eating is complex. Australians expect all produce year-round, which requires imports or energy-intensive storage.

Sources

  • National Farmers' Federation (2023). "Farm Facts." NFF
  • DEFRA (UK). "Food Transport Analysis." Department for Environment, Food & Rural Affairs.
  • ABARES (2023). "Agricultural Commodities Report." Australian Government.
  • Weber, C.L. & Matthews, H.S. (2008). "Food-Miles and the Relative Climate Impacts of Food Choices." Environmental Science & Technology, 42(10), 3508-3513.

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