Articles about Redacția RoAdevăr

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A rocky shore and ocean; not the mouth of a named river

Why Is the Ocean Salty?

18.09.2026 • Environment

Rivers and the seafloor bring ions; evaporation leaves the salts behind. The average is about 35 g/kg, not a constant of every bay.

West front of the United States Capitol, photographed by the Architect of the Capitol, not the 1793 ceremony

233 years since the cornerstone of the United States Capitol was laid

18.09.2026 • History

On 18 September 1793 George Washington took part in the ceremony on Capitol Hill. The precise location of the original stone is not known with certain...

A domestic cat on snow; not a recording of purring

Why Do Cats Purr—and Why It Does Not Always Mean Happiness

18.09.2026 • Environment

Purring is a flexible vocalization produced at the larynx. It can signal rest, solicitation or discomfort; it is read with posture.

A 1925 portrait of Greta Garbo; not a still from Grand Hotel

121 years since the birth of Greta Garbo, an icon of classic cinema

18.09.2026 • Culture

The Swedish actress, born in Stockholm on 18 September 1905, became an MGM star of silent and sound film. She retired in 1941 and died in New York in...

Painting of a girl chopping onions, Gerrit Dou, 17th century; not a contemporary kitchen

Why Do Onions Make Us Cry?

18.09.2026 • Science

Cutting mixes enzymes with sulfur precursors. The result is propanethial S-oxide, an irritating gas. Sulfuric acid does not form in the eye.

A Jimi Hendrix memorial; not a 1970 concert photograph

56 years since the death of Jimi Hendrix, the guitarist who reshaped rock sound

18.09.2026 • Culture

The American musician died in London on 18 September 1970, aged 27. The inquest recorded an accidental death; his leading recording career had lasted...

A diagram of QR-code structure; not a link to scan

How QR Codes Work—and Why They Can Still Scan When Damaged

18.09.2026 • Technology

Denso Wave created the code in 1994. Corner patterns orient the reader, and Reed–Solomon correction can recover some missing data.

United Nations Headquarters in New York; not the crash site near Ndola

65 years since Dag Hammarskjöld died during a peace mission in Africa

18.09.2026 • History

The UN Secretary-General died after the aircraft crashed near Ndola during the night of 17–18 September 1961. The exact cause remains contested; he re...