The world is more interesting than you think.
Unexpected facts, big ideas, and little discoveries. Find something that sparks your curiosity today.
A little more wonder
Highest active volcano sits in the Andes
High elevation often means lasting snow, but the Andes' dry air leaves this volcano without a permanent ice cap. Height alone can't make a glacier; moisture…
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Lying to yourself in mirrors builds self esteem
Some mirror-affirmation routines involve repeating positive claims while looking yourself in the eye; the idea is that repetition can make them feel more…
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Why asthma attacks spike in September
Several asthma triggers arrive at once in September: ragweed pollen rises, temperatures drop, and respiratory viruses spread as children return to school.…
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Zebras travel in massive herds alongside wildebeests
In a mixed herd, a predator has many moving animals to track, making it harder to single out one zebra. That crowd can lower an individual’s risk, but it’s no…
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Monarch caterpillars eat milkweed before taking flight
A monarch’s chemical defense starts at the milkweed buffet. The caterpillar takes in cardenolides—plant toxins—and some remain in the adult butterfly. A…
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Sandhill cranes gather by the thousands in Nebraska
At night, shallow water gives a crane flock an open-air alarm system: a predator has little cover, and the birds can spot it approaching. At dawn, they fly to…
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A rainbow eucalyptus reveals its colors by peeling
Strips of outer bark fall away to expose fresh green tissue. As that exposed surface ages, its color changes, leaving neighboring patches at different stages.…
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How farmers' bags became a racing game
Farm workers turned leftover burlap sacks into a hopping race, using the packaging from their labor for a bit of competition.
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Why where you live can affect your asthma
Traffic and industrial pollution can irritate the airways, the tubes that carry air into the lungs. Repeated irritation can inflame those passages, and…
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Why a Freudian slip can reveal a hidden thought
You mean to say one name and another slips out. Speech is assembled from competing words and thoughts, and an active, emotionally charged thought can…
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Why no dog is truly hypoallergenic
A dog can leave allergenic proteins in saliva, skin cells, and urine, whether or not it sheds much fur. Fur isn’t the only thing people react to, so…
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Reindeer herds travel thousands of miles across tundra
A reindeer herd may make little clicks as it walks, not just the familiar thump of hooves. Researchers think tendons shifting over bones in the animals' lower…
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Why rescue inhalers only treat asthma symptoms
Albuterol quickly relaxes the muscles wrapped around narrowed airways, making it easier to move air. But it does not quiet the underlying inflammation that…
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Smoking can damage your eyesight too
Tobacco toxins can damage blood vessels and reduce oxygen reaching the eyes. Over time, that harm raises the risk of problems such as macular degeneration and…
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China’s Three Gorges Dam can lengthen Earth’s day
By holding so much water in one place, the dam slightly shifts Earth's mass and increases its moment of inertia, making each day a tiny fraction of a second…
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A camera flash dumps stored energy into a gas
In a xenon flash tube, an electrical discharge excites the gas and produces an intense burst of light. A capacitor stores energy between shots, then releases…
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A leech runs its body through a chain of nerve centers
Those 32 compartments are clusters of nerve cells, not 32 independent brains. Each ganglion can coordinate nearby body segments, so a local part of the leech…
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The insurance policy you must keep secret
A kidnapper who knows a target has ransom insurance may see a bigger payoff. That is why a kidnap-and-ransom policy can become void if the insured reveals it.
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Ruby-throated hummingbirds fly continuously across borders
Over the Gulf of Mexico, a ruby-throated hummingbird has no branch to stop on and no flowers to top up its tank. It loads up on fat before takeoff, then burns…
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The strange extra thumb of red pandas
That extra-looking red panda thumb is a wrist bone pressed against the rest of the paw, not an extra finger. It helps clamp bamboo securely enough to handle.…
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Why a torn rotator cuff may not need surgery
A partial tear doesn’t always mean the shoulder has lost all its support. Targeted exercises can strengthen the muscles around the rotator cuff, helping them…
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Why dentists pay so much for disability insurance
A dentist’s income depends on steady hands and a back that can tolerate awkward working positions. An injury to either can threaten the ability to practice,…
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Making eye contact with a guru is a massive deal
Darshan rests on the belief that a revered teacher’s spiritual presence can be transmitted through being seen.
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A researcher studied why critics love to hate Nickelback
Salli Anttonen analyzed Finnish album reviews from 2000–2014 and found repeated arguments about authenticity: originality, commercial success and whether the…
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