Today's Wisdom - Cider, Gandhi and Coral Reefs

Welcome back to A Little Wiser. In the spirit of Gandhi’s famous reminder to live as if you were to die tomorrow, learn as if you were to live forever, today’s wisdom explores:

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Bite into a proper cider apple and you will spit it straight back out. Cidermakers know this, and they have an affectionate name for such fruit: spitters. These are knotted, bitter varieties of apple and the very tannins that make them inedible are what give cider its structure, body, and capacity to age, much as they do in red wine. Cidermakers sort them into four categories by acid and tannin, namely sweet, sharp, bittersweet, and bittersharp. There is a strange piece of ancestry buried in every one of them, since all 7,500 apple varieties on Earth are thought to descend from a single wild species still growing in the mountain forests of Kazakhstan.

What follows in the press house has far more in common with winemaking than with brewing. The fruit is washed and milled into a coarse pulp called pomace, which is often left to sit for an hour or so where oxidation deepens the color and coaxes out flavor. Traditional makers then build the pomace into a great layered stack, each layer wrapped in cloth and separated by wooden racks, before squeezing the whole tower slowly under a press. It takes roughly three bushels of apples (around 380 single apples) to yield just five gallons of juice. Yeast does the rest, consuming sugar and exhaling alcohol and carbon dioxide over anywhere from three months to, occasionally, three years. Some producers pitch cultivated strains for consistency. Traditionalists let the wild yeasts already living on the apple skins take over, a slower and riskier path that can yield the earthy, farmyard funk cider obsessives chase.

Yeast is thorough and will devour every last gram of sugar unless stopped, which is why most cider ferments bone dry and why so many commercial brands are quietly sweetened afterward with sugars the yeast cannot digest. The French answer is a technique called keeving, and it works by starvation rather than addition. The maker strips nutrients from the juice at the outset, causing a thick brown cap to form on the surface and carry them away, so the yeast weakens and stalls before it finishes the job. What remains is a cider that is fruity, gently sweet, and low in alcohol, sweetened by nothing but the fruit itself. One cidermaker described the difference this way: a brewer imposes his will on beer, while a cidermaker can only listen to what the apples want to become.

In 1893, a young Indian barrister was thrown off a train at Pietermaritzburg, South Africa, for refusing to give up his legally purchased first-class seat. Mohandas Gandhi had arrived to practice law. He left twenty-one years later having built something no one had built before. He called it satyagraha, a word he coined by fusing the Sanskrit for truth with the word for holding firmly. Its logic was audacious: refuse to obey an unjust law, refuse to strike back, and willingly accept the punishment, until the conscience of the oppressor cracks under the weight of your suffering. When he finally sailed for India in 1914, the South African statesman Jan Smuts wrote with evident relief that the saint had left their shores and he hoped it was forever.

The genius of Gandhi was strategic imagination, and no campaign showed it better than salt. Britain held a monopoly on this most basic necessity, forbidding Indians to gather it from their own coastline and taxing what they were forced to buy, a levy that pressed hardest on the poorest. Gandhi grasped that here was a law every single Indian could break, harmlessly and simultaneously. On 12 March 1930 he set out from his ashram with a few dozen followers and walked 240 miles to the sea, gathering crowds at every village along the way, and at Dandi he stooped and picked up a lump of natural salt from the mud. The gesture was almost comically small and utterly devastating. Roughly 60,000 people were arrested in the wave of defiance that followed.

Independence arrived in August 1947, and Gandhi did not attend the celebrations. Partition had split the subcontinent into India and Pakistan, and the streets ran with the blood of Hindus, Muslims, and Sikhs fleeing in opposite directions. While the nation cheered, the 77-year-old sat in Calcutta, fasting and spinning thread, trying to shame his own countrymen into stopping the slaughter. His fasts worked where armies could not. His final one ended on 18 January 1948, and twelve days later, walking to an evening prayer meeting in Delhi, he was shot three times at close range by Nathuram Godse, a Hindu nationalist enraged by his defense of Muslims. Over a million people joined the funeral procession.

The first surprise about coral is that it is not a plant or a rock but an animal, a colony of tiny creatures called polyps, each one building a hard skeleton of calcium carbonate around itself for shelter. The second surprise is that a coral cannot really survive alone. Living inside its tissue are microscopic algae called zooxanthellae, which photosynthesize in the sunlight and supply the coral with up to 90 percent of its energy in exchange for a protected home. That partnership powers the entire reef and it's also the source of coral's famous color. The vivid oranges, greens, and purples come from the algae, not the animal.

Together they build structures so vast that the Great Barrier Reef is visible from space, the largest living thing on the planet. Coral reefs cover less than one percent of the ocean floor, yet they shelter roughly a quarter of all marine species. They also work as living seawalls, absorbing wave energy and protecting coastlines from storms and erosion. Corals have survived climatic swings and mass extinctions across hundreds of millions of years, which makes their present predicament all the more alarming.

When water grows too warm, the algae begin releasing toxic compounds, and the stressed coral expels them, leaving its transparent tissue stretched over a stark white skeleton. A bleached coral is starving, and if the heat persists it will die. Between January 2023 and September 2025 the world endured the worst bleaching event ever recorded, with 84 percent of reefs across 83 countries suffering heat stress severe enough to trigger it, compared with 21 percent in the first global event of 1998. The Great Barrier Reef has now bleached six times since 2016, including in back-to-back summers. There is still cause for hope, since scientists are breeding heat-tolerant corals and some reefs prove unexpectedly resilient. The reef’s fate rests on a relationship between two organisms most people have never heard of, and on whether we can keep the water cool enough for them to stay together.

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The A Little Wiser Team