Science
Discover facts about science. Small discoveries that change the way you see familiar things.
Science
Authentic Belgian chocolate must contain pure cocoa butter
Cocoa butter gives chocolate much of its snap and smooth melt because its fat molecules can settle into different crystal arrangements. The arrangement…
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A chain-link fence won't stop a Florida alligator
The holes in chain-link are not just gaps; they can act like a ladder for an alligator’s claws. It can grip the mesh and pull itself up, so the fence may fail…
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How one wild plant became broccoli and cabbage
Farmers changed one wild plant by saving seeds from the plants with traits they liked. Over generations, choosing leafy plants, thick stems, or enlarged…
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Sushi apprentices may spend years mastering rice
Fanning seasoned rice helps excess moisture escape as the rice cools. That keeps the grains from turning soggy while still letting them hold together for…
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Argentine empanadas differ wildly across regional borders
An empanada’s filling can act like an edible address. In Salta, potatoes often join the mix; in Tucumán, beef commonly comes with onion and scallions. One…
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Grease stains render standard paper completely transparent
Paper scatters light because it is full of fibers and tiny air gaps. Grease fills some of those gaps, making the fibers and their surroundings more alike…
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Finland's coffee culture favors a surprisingly light roast
Finns are renowned for very high per-person coffee consumption, with light-roasted filter coffee a familiar everyday choice. Roasting lightly preserves a…
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The Italian fountains that pour free wine
One well-known free wine fountain sits near Ortona, where a winery supplies it along a pilgrimage route. Walkers can stop for a drink, but the fountain is a…
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Millions of Mexican free-tailed bats colonize Texas
A huge cloud-like patch on radar doesn’t always mean rain. When millions of Mexican free-tailed bats stream out of a roost, they bounce radar signals back and…
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In Bhutan, chili peppers are eaten like vegetables
Ema datshi puts peppers at the center of the dish, combining them with cheese sauce to make a meal. In Bhutan, the chili isn’t there to decorate dinner—it is…
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Why sound travels more slowly in cold air
Sound moves through air as a pressure nudge passed from molecule to molecule. Warm air’s molecules move faster, so they pass that nudge along faster; in cold…
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Why Chinese monks drank bitter tea
As you stay awake, adenosine builds up and nudges your brain toward sleepiness. Caffeine in tea blocks the places where adenosine acts, making that sleepy…
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An injured Alpine cow can get an airlift instead of a downhill walk
When an animal cannot safely descend steep mountain paths, crews can secure it in a lifting harness and move it by helicopter. The aircraft replaces a…
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Bears were photographed sniffing aviation-fuel barrels
Photographers in Kamchatka reported bears investigating containers left with fuel residues. Hydrocarbon vapors affect the nervous system, making the scene…
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Why a Guinness takes two minutes to pour
The pause gives the nitrogen foam time to settle, so the bartender can add more beer without the head spilling over. Nitrogen makes especially small bubbles,…
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Why Greeks pour olive oil over almost everything
Many of the aromas that make food taste distinctive travel in fat. Olive oil spreads those aroma compounds across your palate, changing how strongly you…
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What really makes popcorn kernels explode
A popcorn kernel is a tiny pressure cooker: its hull traps steam as the inside heats up. When the pressure finally breaks the shell, the starch flips outward…
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Pitch can shatter under a hammer—and slowly drip
Strike pitch and it may fracture before it has time to flow. Leave it under gravity for long enough, and its molecules slowly rearrange, letting it creep like…
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Italy had no tomatoes until the 1500s
Italy’s later love affair with tomatoes began with a wary first meeting. The fruit arrived from the Americas in the 1500s, and its membership in the…
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Water gives capybaras an escape route
Capybaras can dive and swim away from danger, with their eyes, ears, and nostrils positioned high on the head for life near the surface. Their relaxed…
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Why shutting a faucet can shake your pipes
Water rushing through a pipe has momentum. Shut the faucet suddenly and the moving water has to stop fast, sending a pressure wave through the plumbing that…
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CDs can turn ordinary light into rainbows
A CD’s spiral grooves split reflected white light by sending different colors in different directions. Each groove helps separate the light, like a comb…
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Chili can make lukewarm chocolate feel hot
Capsaicin activates receptors that also respond to painful heat. Put chili in a chocolate drink and your mouth can report burning even when the liquid isn't…
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Why tea runs down the spout
A slow stream can stick to the ceramic spout because water clings to the surface and its surface tension holds the stream together. It can curl under the lip…
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