The BrainSnail Blog
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846 articles · page 10 of 36
Why Do Apples Turn Brown? The Enzyme Behind Cut Fruit and How to Stop It
A cut apple browns because an enzyme meets oxygen and turns the fruit's own chemicals into pigment. Which fruits do it, and what lemon juice actually does.
What Is the Story of Prometheus? Fire, Punishment and the Gift to Humanity
Prometheus stole fire from the gods, gave it to humans and paid with an eagle at his liver. The myth in Hesiod and Aeschylus, and what it came to mean.
Who Were the Neanderthals? Our Closest Relatives and What Became of Them
Neanderthals lived across Europe and western Asia for 350,000 years before vanishing. What they were like, how they lived, and why most of us carry their genes.
Were Dinosaurs Warm-Blooded? What Bones, Feathers and Growth Rings Suggest
For a century dinosaurs were pictured as sluggish reptiles. Bone structure, growth rates, feathers and chemistry now point to warm blood in most of them.
What Is Negligence? When Carelessness Becomes a Legal Wrong
Negligence is the law's name for harm caused by a failure to take reasonable care. The snail in the ginger beer, and the four things a claimant must prove.
What Is Taoism? The Way, Effortless Action and the Tao Te Ching
Taoism is the Chinese tradition of living in accord with the Tao, the way of nature. Its founding text, wu wei, and how a philosophy became a religion.
Why Do Zebras Have Stripes? Four Theories and the Experiments That Tested Them
Zebra stripes have been explained as camouflage, confusion, cooling and fly repellent. What each theory predicts, and why the biting-fly explanation has won.
What Is the Milky Way? Our Home Galaxy Seen From the Inside
The Milky Way is the galaxy the Sun belongs to, a disc of a few hundred billion stars. What it is made of, where we sit in it, and how its shape was mapped.
What Is Baroque Art? Drama, Light and Persuasion in the Seventeenth Century
Baroque art is the theatrical style of the 1600s: strong light, movement, emotion and scale. Where it came from, why the Church wanted it, and who made it.
What Is the Difference Between Weather and Climate?
Weather is what the atmosphere is doing today; climate is what it usually does over decades. Why a cold week says nothing about warming, and why it matters.
What Was the Age of Exploration? How Europe Mapped the World and Changed It
Between 1400 and 1600 European ships found sea routes to Asia and stumbled on two continents. What made the voyages possible and the exchange that followed.
What Is Imposter Syndrome? Feeling Like a Fraud When the Evidence Says Otherwise
Imposter syndrome is the persistent belief that your success is undeserved. Where the term came from, who reports it, what keeps it going, and what helps.
How Do Aeroplanes Fly? What Actually Holds a Wing Up
A wing stays up by pushing air down. Why the textbook explanation is wrong, what the angle of the wing does, and why a plane can fly upside down.
How Does Fire Work? The Chemistry of Combustion
Fire is a chain reaction between fuel and oxygen that makes its own heat. Why it needs three things to start, why the flame glows, and what the colours mean.
How Do Antibiotics Work, and Why Do Bacteria Stop Responding?
Antibiotics attack structures bacteria have and human cells do not. What the main kinds target, why they fail against viruses, and how resistance spreads.
What Causes El Nino? A Warm Patch of Ocean That Reshapes the World's Weather
Every few years the tropical Pacific warms and the trade winds collapse. How El Nino and La Nina work, and why they flood some regions and dry out others.
What Is the Story of Persephone? The Myth Behind the Seasons
The daughter of the harvest goddess was taken to the underworld, and her mother's grief stopped everything growing.
What Is a Haiku? Seventeen Syllables and What Goes Into Them
A haiku is a three-line Japanese poem that catches one moment, usually in nature, with a turn in the middle.
What Is Purchasing Power Parity? Why the Same Burger Costs Different Amounts
Exchange rates say what a currency buys abroad; purchasing power parity says what it buys at home. Why they differ and which to use when comparing countries.
What Did the Marshmallow Test Really Show?
Children who waited for a second marshmallow seemed to do better in life, and the study became a parable about willpower.
Why Is the Speed of Light the Universe's Speed Limit?
Nothing with mass can reach 300,000 kilometres a second, and the reason is not engineering. What Einstein showed about time, mass and energy.
How Does Soap Work? A Molecule With Two Opposite Ends
Soap lifts grease off skin and dishes because each of its molecules has a water-loving end and a fat-loving end.
Why Do We Have Blood Types? A, B, O and the Rhesus Factor Explained
Blood types are sugars on the surface of red cells and the antibodies that attack the ones you lack.
How Volcanic Eruptions Change the Weather Around the World
A big eruption can cool the whole planet for two or three years. Why it is the sulphur, not the ash, that matters, what 1815 and 1991 did.
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