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Why Brownian motion can’t power a perpetual-motion machine
Science

Why Brownian motion can’t power a perpetual-motion machine

A ratchet seems like it should turn random jostling into one-way motion, but the pawl—the catch that blocks backward movement—gets jostled too. The same heat…

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The ghostly glow that clings to ship masts
Science

The ghostly glow that clings to ship masts

St. Elmo’s fire is air glowing around a pointed object, not a flame eating its way up a mast. A strong electric field energizes nearby air until it gives off…

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A silent-film star earned an Oscar nomination when movies learned to talk
Culture & entertainment

A silent-film star earned an Oscar nomination when movies learned to talk

Bessie Love moved into sound with The Broadway Melody in 1929 and received a Best Actress nomination. The musical demanded a new kind of screen performance:…

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The ski resort that lost its glacier
Travel

The ski resort that lost its glacier

By 2009, the 18,000-year-old glacier had melted completely; the road reopened anyway, drawing climate-grief tourists to the lodge at 17,000 feet.

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Two small planes rescued survivors from an Alpine glacier
Travel

Two small planes rescued survivors from an Alpine glacier

After an American transport aircraft became stranded on Switzerland's Gauli Glacier in 1946, Swiss pilots landed two Fieseler Storch planes on the snow.…

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Ashgabat's airport terminal takes the shape of a falcon
Travel

Ashgabat's airport terminal takes the shape of a falcon

The main passenger terminal in Turkmenistan's capital uses sweeping forms to evoke an enormous bird. Its silhouette turns a transport building into a national…

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A US study withheld syphilis treatment for decades
Health

A US study withheld syphilis treatment for decades

From 1932 to 1972, the Tuskegee study followed Black men with syphilis without properly informing them of the study's purpose. Effective penicillin treatment…

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The Wilhelm Gustloff wreck is a grave, not a dive attraction
Travel

The Wilhelm Gustloff wreck is a grave, not a dive attraction

The ship sank in the Baltic in January 1945 while carrying civilians and military personnel. Poland protects the wreck as a war grave, with diving prohibited…

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Yellow Submarine was restored one frame at a time
Culture & entertainment

Yellow Submarine was restored one frame at a time

The 2012 restoration cleaned the animation by hand rather than letting automated software decide what belonged in each image. That mattered for a film packed…

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A mysterious epidemic disrupted both sleep and movement
Health

A mysterious epidemic disrupted both sleep and movement

Constantin von Economo described encephalitis lethargica in 1917. Patients could develop profound sleep disturbances and movement problems; some later…

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A solar storm once made telegraph wires spark
Science

A solar storm once made telegraph wires spark

During the 1859 Carrington Event, a severe geomagnetic disturbance induced currents in long telegraph lines. Operators reported sparks and equipment behaving…

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The brain signal before a movement does not settle the free-will debate
Psychology

The brain signal before a movement does not settle the free-will debate

A readiness potential can appear before people report deciding to move. One influential model explains the averaged signal partly through fluctuating neural…

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Somaliland built state institutions before winning recognition
Travel

Somaliland built state institutions before winning recognition

After declaring independence in 1991, Somaliland developed its own currency, elections, and security forces while remaining largely unrecognized…

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Tallinn's Linnahall puts a public landscape on a building's roof
Travel

Tallinn's Linnahall puts a public landscape on a building's roof

Opened in 1980, the broad, low complex was designed with terraces and monumental stairs instead of a conventional tower. Its roof can read like an extension…

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Newspapers exaggerated the War of the Worlds panic
Culture & entertainment

Newspapers exaggerated the War of the Worlds panic

Newspapers worried radio was taking their ad revenue, and some exaggerated the broadcast's effects, portraying a few confused callers as nationwide hysteria,…

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The squid nerves behind a famous circuit
Science

The squid nerves behind a famous circuit

A Schmitt trigger gives a wavering signal two thresholds: one to switch on and a different one to switch off. That gap stops tiny electrical jitters from…

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Entire independent film scenes ran out of a hotel room
Culture & entertainment

Entire independent film scenes ran out of a hotel room

After the mainstream film industry shut her out, Shirley Clarke turned a penthouse at New York’s Hotel Chelsea into a production hub for the underground…

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A group can agree how far a stationary light moved
Psychology

A group can agree how far a stationary light moved

In Muzafer Sherif's experiments, a fixed light in a dark room appeared to drift because viewers lacked visual reference points. Participants' estimates moved…

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