Wool is a technology so good that if a startup unveiled it tomorrow, it would raise a fortune.

Run through the spec sheet with a straight face.

It keeps you warm even when it's soaking wet, which almost nothing else does. It is naturally flame-resistant. It doesn't catch and melt onto your skin like plastic does. It chars, refuses to sustain the flame, and puts itself out when you take the fire away. It manages moisture, breathes, and resists smell so well you can wear it for days. It bends tens of thousands of times without snapping.

And when you're finally done with it, you can put it in the ground and in a matter of months it's gone, rotted back into the soil, feeding it nitrogen on the way out.

Then there's the supply chain, which is the part no engineer could ever replicate. It grows back. Every year, on its own, on nothing but grass and rain, on a sheep that was going to stand on that hillside anyway. A self-renewing, fireproof, compostable insulation fibre with a production input of weather.

We replaced it with polyester. Oil, spun into thread, that melts on you in a fire, sheds plastic into the sea with every wash, and sits in landfill for centuries when you're done.

We had the better version the whole time. It says baa.

There is now a serious, well-funded plan to vaccinate every cow on earth, twice a year, so it burps less politely. Bill Gates is behind it. So is the New Zealand government. Somewhere a marketing department is very proud.

The company furthest along calls its methane vaccine the holy grail of livestock emissions, a phrase that should make you reach for your wallet and check it is still there.

The pitch is gloriously simple. Train the cow's own immune system to turn on the microbes in her gut, so she belches less methane, with a single jab lasting months. Early results suggest a cut of ten to fifteen per cent. Trials run through 2027, launch around 2030, by which point the dream is a needle in the neck of every cow they can corner.

Pause on that. Not a feed tweak. A plan to medicate an entire species, forever, across the whole planet, to fix a problem with how we count its burps.

Because methane from a steady herd cycles out of the air within about a decade. It does not pile up like fossil carbon. A stable national herd adds no new warming whatsoever, whatever the headlines shriek. The cow was convicted by an accounting method, and the sentence is a lifetime of injections.

And follow the money, because it does the confessing for you. The cash floods in from billionaire climate funds and the food giants chasing their own supply-chain targets, the very people who need the cow to look guilty so their spreadsheets come out green. Not a penny from the farmer, who just inherits the syringe and the bill.

So the grass-fed cow, quietly turning rain and sunshine into food on land that grows nothing else, is now a wellness patient with a biannual appointment. Marvellous. The cow was never the emergency. The people insisting she is just happen to have a vaccine to sell.

A mid-summer treat from  @Macbeths for lovers of Orkney Boreray mutton.
All from the Lochend flock in Shapinsay who very much farm with nature
macbeths.com/product-categor…
A special taster box also available  macbeths.com/product/boreray…

Farmer: "Gentlemen. I'd like to present the ultimate plant-based protein technology."

Investor 1: "We're listening."

Farmer: "It converts inedible plant matter into complete protein. Grass, cornstalks, brewery waste, vegetable peelings. Anything cellulose-rich that humans can't…