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Motor units activate in a strict physical sequence
Health

Motor units activate in a strict physical sequence

When a muscle needs more force, the nervous system first activates smaller motor units and then recruits larger ones. Adding them in stages lets force rise…

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Skyrim can turn a cave mushroom into a healing potion
Games

Skyrim can turn a cave mushroom into a healing potion

Blisterwort has a Restore Health alchemical effect, which can be combined with a matching ingredient at an alchemy lab. The same mushroom also carries other…

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Why ventriloquist dummies sell for fortunes
Economy

Why ventriloquist dummies sell for fortunes

For oddity collectors, an antique wooden ventriloquist figure is worth bidding on—even if its face gives everyone else the creeps. Some sell for high prices…

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How researchers can influence rats without meaning to
Psychology

How researchers can influence rats without meaning to

Put two rats in the same maze, but tell researchers one is “bright” and the other “dull.” Expectations can quietly change how people handle and observe the…

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A gambler can lose more trying to erase the last loss
Psychology

A gambler can lose more trying to erase the last loss

After losing money, a gambler may think one more bet can win it back. The loss makes stopping feel like accepting defeat, while another bet offers the…

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The tiny hotel bottles creating a huge plastic problem
Travel

The tiny hotel bottles creating a huge plastic problem

Hotels use billions of these single-use plastic bottles, many of which are thrown away partly full and are difficult to recycle. Some states and hotel chains…

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How fighter jets get a sudden burst of thrust
Technology

How fighter jets get a sudden burst of thrust

An afterburner sprays fuel into the hot exhaust, where leftover oxygen ignites it and rapidly expands the gases for extra thrust. The boost burns fuel so…

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The first VR headset had to be hung from the ceiling
Technology

The first VR headset had to be hung from the ceiling

Ivan Sutherland's Sword of Damocles was so heavy it had to be suspended from the ceiling. It displayed simple wireframe rooms and tracked users' head movements.

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Can a fast metabolism make you age faster
Health

Can a fast metabolism make you age faster

A faster metabolism can produce more reactive molecules as cells use energy, and those molecules can contribute to oxidative stress. But that possible strain…

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Bots passed humans in one major web-traffic report
Technology

Bots passed humans in one major web-traffic report

Imperva’s 2025 report classified 51% of the web traffic it analyzed for 2024 as automated. That includes useful bots as well as scrapers and attackers. It is…

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The sheep that changed cloning forever
Science

The sheep that changed cloning forever

To make Dolly, researchers moved a mature cell nucleus into an egg that had been emptied of its own. The egg’s contents changed how that nucleus used its…

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Why nobles cut their clothes to show off
History

Why nobles cut their clothes to show off

Slashing an expensive outer garment exposed the costly layer beneath. The damage was the display: a wearable way to show you could afford to ruin good clothes.

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The kitchen appliance behind Mass Effect's alien voices
Games

The kitchen appliance behind Mass Effect's alien voices

The alien growls were made by recording kitchen appliances grinding up trash, then slowing down the audio.

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Apollo's guidance computer worked with just 2,048 words of writable memory
Technology

Apollo's guidance computer worked with just 2,048 words of writable memory

Its fixed memory held 36,864 words, while the smaller writable section stored changing data. A word was a compact unit of bits, not a human-language word.…

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Acoustic waves travel more than four times faster through liquid water than they do through open air
Science

Acoustic waves travel more than four times faster through liquid water than they do through open air

Sound travels faster in water because water resists being squeezed. When one patch is pushed, that stiffness passes the pressure change quickly to the next…

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Alice in Wonderland's creator also published mathematics
Culture & entertainment

Alice in Wonderland's creator also published mathematics

Lewis Carroll was the pen name of Charles Lutwidge Dodgson, an Oxford mathematics lecturer. Under his real name he wrote on subjects such as geometry and…

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Mars retrograde drains all your physical energy
Myths & mysteries

Mars retrograde drains all your physical energy

In astrology, Mars retrograde is said to sap motivation and leave people irritable but too tired to act. The supposed slump can last about six weeks.

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Mario collects gold coins that serve no real purpose
Games

Mario collects gold coins that serve no real purpose

Coins aren’t useless: Mario can trade them for an extra life, though they won’t cover his plumbing bills.

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