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Science
Double-Slit Experiment
Fire a single speck of light at two slits without watching it, and it behaves as if it slips through both at once…
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Science
Quantum Entanglement
Two particles born together can stay mysteriously linked no matter how far apart they travel — measure one, and the…
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Science
Sleep
You'll spend about a third of your life unconscious — and science's best guess about why is that your brain is…
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Science
Dream
You dream for more than two hours every single night — and then delete nearly all of it. Science still can't say where…
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Science
Déjà vu
That eerie flash of "I've lived this exact moment before" hits two-thirds of us — and scientists can now trigger it on…
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Science
Caffeine
The world's most consumed psychoactive drug works by impersonating the very molecule that makes you sleepy — and your…
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Science
DNA
Coiled inside nearly every cell of your body are two meters of a molecule so precise that it copies three billion…
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Science
Chicxulub crater
Oil prospectors looking for petroleum found a 180-kilometer bullseye buried under Mexico — the scar of the day an…
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Science
Rainbow
No two people have ever seen the same rainbow — each one is a private show staged by sunlight in millions of…
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Science
Aurora
The northern lights are the Sun crashing into our sky — charged particles painting the night green, red, and purple…
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Science
Fingerprint
The ridges on your fingertips were finished before you were born and will outlast everything but decomposition — and…
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Science
Yawn
Reading about yawning will probably make you yawn — a contagion so strong it jumps from humans to dogs, and science…
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Science
Photosynthesis
Plants capture about 130 terawatts of sunlight — roughly eight times everything human civilisation uses. And the…
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Science
CRISPR Gene Editing
It is borrowed from the immune system bacteria use to fight viruses. In 2023 it became an approved medicine — and in…
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Science
Gravity
It is the weakest of the fundamental forces, and it built every star and galaxy in the universe. Physics still has no…
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Science
Lion
It is the only big cat on Earth that lives in a family, and the only one where the females do most of the hunting. Its…
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Science
Bioluminescence: Life That Makes Its Own Light
Some creatures make their own light — and evolution reinvented the trick at least 94 separate times. Dive into the…
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Science
Bioluminescence
Life on Earth invented its own light at least 94 separate times, and one of those inventions is why the sea sometimes…
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Science
Soap
Soap does not poison germs. It physically tears them apart, and the recipe for it is the oldest chemical reaction…
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Science
Plastic
The first plastics were made from milk, blood and egg protein. The stuff we now cannot get rid of is barely twenty…
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Science
Fire
Fire is not a thing. It is a reaction you are watching happen, and for the first four billion years of Earth's history…
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Science
Lightning
Right now, lightning is hitting somewhere on Earth about 44 times every second. Each flash heats the air to around…
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Science
Octopus
An octopus has three hearts, blue blood, and two-thirds of its nerve cells in its arms. A cut-off arm can still move…
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Science
Tardigrade
Tardigrades are usually only about half a millimetre long, yet they can survive freezing cold, deadly radiation and…
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Science
Antimatter
For every particle of ordinary matter there is a mirror version with the opposite charge. Physicists have made a…
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Science
Periodic table
Mendeleev left holes in his table and described the elements that belonged there. Within 17 years, three of them had…
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Science
Fungus
Fungi are not plants. They are closer to animals, and one colony in Oregon covers more than 900 hectares and has been…
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Science
Evolution
Two men, working thousands of miles apart, landed on the same world-changing idea at almost the same moment. What they…
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Science
Atom
A single human hair is about a million carbon atoms wide. The ancient Greeks named the atom uncuttable, then science…
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Science
Diamond
The hardest natural material on Earth is made of the same stuff as pencil lead, and it is slowly turning back into it…
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Science
Electricity
Thousands of years before light bulbs, people made feathers jump with a lump of amber and some cat fur. The word…
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Science
Glass
Old church windows are thicker at the bottom, so glass must slowly flow, right? Research says no, and the truth about…
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Science
Tide
Every tide on Earth is slowly pushing the Moon away and making your day longer. Here is how the Moon and Sun lift…
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Science
Magnetism
Ancient stones that pulled iron started it all, but here is the twist: copper and carbon are quietly pushed away by…
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Science
Sonic boom
The crack of a whip is a tiny sonic boom. So why does a supersonic jet drag its boom across the ground for its whole…
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Science
Tornado
In 1915 a tornado in Kansas carried a bank check to a field 305 miles away. Here is how these spinning columns of air…
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Science
Absolute zero
It is the coldest temperature there could ever be, and nobody will ever reach it. Scientists have still come within 38…
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Science
Chameleon
Its tongue can hit a bug in 0.07 seconds, its eyes look two ways at once, and some of its bones glow blue. The colour…
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Science
Limonene
The smell of a fresh orange peel is mostly one molecule. The same molecule strips paint, dissolves plastic and prints…
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Science
Carnivorous plant
Some plants got tired of waiting for good soil and started eating animals instead. One even works as a public toilet…
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Science
Animal echolocation
Bats hunt in pitch darkness by listening to their own echoes. One clever moth jams that sonar so well that bats…
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Science
Geyser
Iceland's Geysir is so famous that every geyser in English is named after it, and when it went quiet, people made it…
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Science
Firefly
Some female fireflies fake the flash code of another species, lure in the males looking for a mate, and then eat them.
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Science
Spider silk
Weight for weight, spider silk is tougher than both steel and Kevlar, and a strand long enough to circle the Earth…
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Science
Hail
In 2015, hail piled up four feet deep on a single city block in Denver, while the streets around it stayed completely…
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Science
Hibernation
An Arctic ground squirrel can keep its belly below freezing for weeks, and a hibernating bear can go months without…
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Science
Coral reef
Coral reefs cover less than 0.1% of the ocean, yet at least a quarter of all sea species live on them. And the…
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Science
Venom
Animals invented venom at least 104 separate times, and the venom of one lizard now holds a treatment for type 2…
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Science
Glacier
Some glaciers race 20 to 30 meters a day, while others sit so still that trees grow on top of them. And technically…
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Science
Bird migration
Some bar-tailed godwits fly 11,000 km from Alaska to New Zealand without a single stop, powered by fat that makes up…
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Science
Cloud
Some clouds are born from waterfall spray, and the highest ones of all glow after sunset 80 kilometres up, likely…
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Science
Pearl
A pearl almost never starts with a grain of sand. It usually begins with a parasite or a tiny wound, and in 1917 a…