You’ll probably be familiar with the Water Cycle: rain falls onto land and rivers, flows to the sea, evaporates, forms clouds, which in turn cool and condense and fall as rain, thus starting the cycle all over again.
The carbon cycle–or at least the idea of a carbon cycle–is also known to many of us, thanks largely to its role in global warming.
The Cheese Cycle, however, is a total mystery to almost everyone. In fact, I only discovered it on Tuesday morning after throwing some out-of-date cheddar out of the window to the local seagulls. A low-wattage bulb clicked on in my head and I had the whole process worked out in an inst. Here’s how it works.
- You go to the fridge to get some cheese for a sandwich. On opening the door, your olfactory senses tell you, by way of a complex chemical interaction known to scientists as a ‘whiff’ or ‘pong’ that your cheese is off and that eating it would probably be deleterious to the efficient functioning of the fragile human digestive system.
- You throw the whiffy cheese (as I did) outside to the local seagulls/pigeons/dumpster divers (if printing this post, please delete as appropriate).
- Seagulls eat the cheese, covering their nostrils owing to the ‘pong’ but otherwise enjoying the gustatory sensation. (Fools!)
- Not to put too fine a point on it, later that same morning the gulls convert the cheese into, erm, guano.
- The guano (tons and tons and tons of it) is harvested partly from rocks on the seashore and partly from car roofs in supermarket car parks, and becomes a valuable raw ingredient of fertiliser.
- Fertiliser makes farmers’ fields lush and green.
- Dairy cows eat the lush green grass and (long story short) produce milk…
- …some of which is turned into cheese. Note: next time, read the use-by date and stop wasting food.
Too technical for you? Then study our handy infographic, “The Cheese Cycle” (aka “How Nature never lets anything go to waste”).



