131 years since Booker T. Washington’s Atlanta Exposition address
18 September 2026 marks 131 years since Booker T. Washington spoke at the Cotton States and International Exposition in Atlanta. Born into slavery in...
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156 years since the Old Faithful geyser received its name
18 September 2026 marks 156 years since members of the Washburn–Langford–Doane expedition named Old Faithful, the geyser in what is now Yellowstone Na...
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Why Is the Sky Blue While Sunsets Turn Red?
Sunlight looks white, but it is a mix of wavelengths. Passing through the atmosphere, it interacts with nitrogen and oxygen molecules. For particles m...
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EU Announces €3.3 Billion Payment to Support Ukraine’s Defence
The European Commission is to transfer €3.3 billion to Ukraine on Friday, 18 September, for the procurement of missiles and drones. President Ursula v...
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Why Do We Get Goosebumps?
A cold draft, a tense scene or a musical chord can raise the same bumps on the skin. The phenomenon is piloerection — popularly, goosebumps. The tiny...
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Why Is the Ocean Salty?
River water usually tastes almost neutral; seawater is salty. Not because rivers carry no salts, but because they carry little, and the oceans collect...
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233 years since the cornerstone of the United States Capitol was laid
18 September 2026 marks 233 years since the cornerstone ceremony for the United States Capitol, the building intended as the home of Congress. The 179...
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56 years since the death of Jimi Hendrix, the guitarist who reshaped rock sound
Jimi Hendrix died in London on 18 September 1970, aged 27. Born in Seattle in 1942 as Johnny Allen Hendrix and later known as James Marshall Hendrix,...
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How QR Codes Work—and Why They Can Still Scan When Damaged
A QR code is not a random mosaic. The phone identifies the structure, corrects perspective, reads the black-and-white modules and rebuilds the data. I...
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Why Are Airplane Windows Rounded?
Airliner windows are small and rounded, even though a rectangle would give a wider view. The reason is the pressure difference between the cabin and t...
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49 years since Voyager 1 captured Earth and the Moon in the same frame
On 18 September 1977, two weeks after its 5 September launch, NASA’s Voyager 1 pointed its imaging system back towards Earth. From more than 11 millio...
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82 years since the birth of Reinhold Messner, pioneer of climbing without supplementary oxygen
17 September 2026 marks 82 years since the birth of Reinhold Messner in Brixen/Bressanone, South Tyrol. Encyclopaedia Britannica and his own site reco...
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