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The jetpack blast that's hard to see
Transport

The jetpack blast that's hard to see

The Bell Rocket Belt used hydrogen peroxide that broke down over a catalyst into hot steam and oxygen. That exhaust was hard to see, but it was still a blast…

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The horrifying ancient remedy for nerve damage
History

The horrifying ancient remedy for nerve damage

Ancient Greek accounts prescribed boiling newborn dogs in oil to treat nerve damage. The remedy was horrifying, and it didn’t work.

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Why white airplanes make leaks easier to spot
Travel

Why white airplanes make leaks easier to spot

A white exterior makes dark trails of leaking hydraulic fluid or oil easier for maintenance crews to spot. Colorful patterns could camouflage them.

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Microscopes revealed organisms nobody believed existed
History

Microscopes revealed organisms nobody believed existed

Before microscopes, a drop of pond water looked like still water. Early lenses revealed it was a crowded world of tiny, wriggling life.

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Topaz gems violently jumpstart your motivation
Myths & mysteries

Topaz gems violently jumpstart your motivation

Astrological texts describe yellow topaz as having an activating frequency meant to jolt a sluggish energy field into action.

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Vines strangle competing plants to reach light
Myths & mysteries

Vines strangle competing plants to reach light

Without strong trunks of their own, vines climb over other plants to reach sunlight.

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Mahler's music became entangled with the 'curse of the ninth'
History

Mahler's music became entangled with the 'curse of the ninth'

The superstition connects composers' deaths with reaching a ninth symphony. In the familiar account associated with Mahler, the unnumbered Das Lied von der…

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The performers who leap from a towering pole
History

The performers who leap from a towering pole

In the Danza de los Voladores, four performers leap backward from a pole about 100 feet high, ropes tied to their ankles. They spiral down while a fifth man…

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Correction fluid hides ink using opaque chemicals
Technology

Correction fluid hides ink using opaque chemicals

Correction fluid covers permanent ink rather than removing it. It’s fast-drying, opaque white paint in a volatile solvent that evaporates on the page; a…

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Why silence can make you talk aloud
Psychology

Why silence can make you talk aloud

Silence removes the social audience that usually makes you keep thoughts inside. So you narrate the search for your keys, argue through a decision, or coach…

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Bloodborne required analyzing totally obscure item texts
Culture & entertainment

Bloodborne required analyzing totally obscure item texts

Its story is scattered across item descriptions, so players piece together the cosmic-horror plot from clues attached to objects such as bloody pebbles and…

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Feeling nostalgic for a time you never lived
Psychology

Feeling nostalgic for a time you never lived

You don't need firsthand memories to feel nostalgia. Stories and old photos let you assemble a past from other people's details, while music and images give…

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Your bank's wire fee is not just the network's transfer fee
Economy

Your bank's wire fee is not just the network's transfer fee

Payment networks charge participating banks according to published schedules, while banks set their own prices for customers. The retail charge can also cover…

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Medieval baby Jesus could look like a miniature adult
History

Medieval baby Jesus could look like a miniature adult

Many images emphasized Christ's divine identity and wisdom rather than an ordinary infant's proportions. Adult-looking features made a theological message…

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Pisces placements float through life entirely ungrounded
Myths & mysteries

Pisces placements float through life entirely ungrounded

In this astrological portrayal, they drift from room to room, quietly observing rather than taking part.

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Medieval lapidaries insisted that wearing a crushed sapphire would somehow magically protect you from witchcraft
Myths & mysteries

Medieval lapidaries insisted that wearing a crushed sapphire would somehow magically protect you from witchcraft

Lapidaries were books that assigned magical properties to gemstones. Some even prescribed powdered gems for illness or bad luck, though swallowing crushed…

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The browser games that became escape rooms
Games

The browser games that became escape rooms

The format grew out of early-2000s point-and-click browser games, where players searched pixels for keys.

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Ice luge drinking aggressively chills liquids via gravity
Games

Ice luge drinking aggressively chills liquids via gravity

Gravity pulls the drink down the carved channel, where it absorbs heat from the ice and chills before reaching the glass.

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