Technology
Could We Ever Build a Truly Unhackable Computer?
Encryption can be formidable. A real computer still has users, hardware, software and connections that create places to attack.
Science
What Would Happen If Earth's Magnetic Field Disappeared?
The planet's magnetic shield matters greatly, but a field reversal is not the sudden extinction story it is sometimes made out to be.
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Latest Brews
Nature
Why Are Coral Reefs So Important to Life in the Ocean?
How tiny animals build vast habitats — and why they are at risk
History
The Remarkable History of the Public Toilet
What an everyday necessity reveals about cities, health and belonging
Culture
How Did the Orchestra Become What It Is Today?
From court ensembles to the great modern concert hall
Nature
How Do Animals Survive Months Without Eating?
Four very different ways to live on stored energy
Society
Who Decides How Public Spaces Are Used?
The quiet choices behind who can gather, play, rest and belong in a shared place
Science
Science
How Can a Clock Measure Gravity?
Einstein's prediction that height changes the rate of time has become a practical way to measure the shape of Earth's gravity field.
Science
Why Is There More Matter Than Antimatter in the Universe?
A tiny early imbalance may explain every star and person—but its cause remains unknown.
Science
How Does the Brain Know Where We Are?
Place cells, grid cells and memory build the map we use long before we reach for a phone.
Technology
Technology
How Does a Computer Recognise a Human Face?
Facial recognition turns an image into a numerical comparison. What that comparison means depends on the system and where it is used.
Technology
What Happens When an Undersea Internet Cable Breaks?
A fault on the seabed sets off a race between rerouting software and a ship carrying spare fibre.
Technology
Why Are Satellites Becoming a Problem for Astronomy?
The same constellations that widen internet access can leave streaks in images and noise in radio observations.
Society
Society
Why Do We Still Work a Five-Day Week?
The familiar week persists because workplaces and whole cities are organised around it—but shorter-week trials are testing the bargain.
Society
Why Do Some Countries Have Much Higher Levels of Trust Than Others?
A society’s willingness to trust strangers is shaped by everyday experience, public institutions and the long memory of unfairness.
History
History
How Did Humans Learn to Navigate the Open Ocean?
Stars, swells and sea clocks turned an apparent void into a route
History
The Forgotten History of the World's Great Postal Networks
How relays, stamps and international agreements made distance manageable
History
The Forgotten Women Who Helped Build Modern Science
Four discoveries show how evidence enters science—and how credit can follow a very different path.
Culture
Culture
Why Are Some Books Considered Classics?
The readers and institutions behind a book's long afterlife
Culture
How Did Photography Change the Way We Remember History?
The camera gave the past a face — and a frame
Culture
How Did Public Libraries Become Places for Everyone?
The free library turned access to knowledge into a civic promise—and the meaning of access keeps changing.
Health
Health
What Happens to the Body During Extreme Heat?
How our cooling system copes — and why it can fail
Health
Why Is Chronic Pain Different from Acute Pain?
When a protective warning becomes a lasting condition
Health
Why Does Blood Clot After an Injury?
The rapid repair system that seals a vessel without stopping circulation
Nature
Nature
What Happens When a Species Returns to an Ecosystem?
Beavers, wolves and grazers reveal the possibilities — and limits — of rewilding
Nature
What Would Happen If Pollinating Insects Disappeared?
The result would be a poorer, less reliable world of flowers and food—not the instant end of humanity.
Nature
Why Are Wetlands Among the Most Valuable Ecosystems on Earth?
Marshes, peatlands and mangroves do quiet work for wildlife, water and climate—work we notice most when it disappears.
Food
Food
The Science Behind the Perfect Cup of Tea
What temperature, time and water really do to the leaves
Food
How Did Spices Become Some of the World's Most Valuable Commodities?
The flavours that crossed oceans and drew empires into existing trade networks
Food
Why Do Some Foods Taste Better When They're Fermented?
A small cast of microbes can turn simple ingredients into sour, savoury and surprisingly complex foods