Why Is the Ocean Salty?
River water usually tastes almost neutral; seawater is salty. Not because rivers carry no salts, but because t...
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News
Stay updated with the latest news and analysis on RoAdevar.
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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 i...
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Why Do Cats Purr—and Why It Does Not Always Mean Happiness
The sofa purr is often, correctly, read as contentment. Cats also purr when frightened, hurt, ill or asking fo...
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121 years since the birth of Greta Garbo, an icon of classic cinema
Greta Lovisa Gustafsson was born in Stockholm on 18 September 1905, into a working-class family. After appeara...
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Why Do Onions Make Us Cry?
A whole onion does not start tears. The blade ruptures cells and mixes substances that had been kept in separa...
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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...
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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-an...
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65 years since Dag Hammarskjöld died during a peace mission in Africa
During the night of 17–18 September 1961, the aircraft carrying Dag Hammarskjöld towards Ndola crashed near it...
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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 pre...
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Why Does Rain Have a Smell? The Science Behind the Scent of Wet Earth
The earthy smell after a summer shower seems to come from the water itself. The drop, however, has almost no a...
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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...
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66 years since the first Paralympic Games opened in Rome
On 18 September 1960 a competition now recognised as the first Paralympic Games opened in Rome. Around 400 ath...
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79 years since the United States Air Force became an independent service
On 18 September 1947, US military aviation ceased to be an internal branch of the Army. The National Security...
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175 years since the first edition of The New York Times was published
On 18 September 1851 a four-page newspaper went on sale in New York for one cent under the name The New-York D...
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Cleveland Guardians take AL Central lead after beating Chicago White Sox
The Cleveland Guardians moved into first place in the AL Central after a 6–3 win over the Chicago White Sox on...
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Japan's biomass demand puts pressure on Indonesia's tropical forests
Rising Japanese demand for energy biomass is stimulating wood-pellet and wood-chip production in Indonesia, wh...
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China accelerates advanced manufacturing and investment in AI-powered factories
President Xi Jinping has called for China’s advanced-manufacturing sector to become “bigger and stronger”, wit...
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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. Encycl...
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Latin America accounted for 85% of environmental-defender killings in 2025
At least 124 people defending land, forests, water and communities were killed in 2025, according to Global Wi...
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69 years since the Federation of Malaya was admitted to the United Nations
17 September 2026 marks 69 years since the Federation of Malaya was admitted to the United Nations. The UN’s o...
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Dollar reaches seven-week high after Federal Reserve signals
The US dollar reached, on 17 September 2026, its highest level in seven weeks after the Federal Reserve raised...
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78 years since the assassination of Folke Bernadotte, the United Nations’ first mediator
17 September 2026 marks 78 years since the assassination of Count Folke Bernadotte, the United Nations mediato...
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Climate change made deadly Nepal glacier collapse more likely, analysis finds
Human-caused climate change probably contributed to the conditions behind the ice and rock collapse on 26 Augu...
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97 years since the birth of Stirling Moss, Formula One’s “uncrowned champion”
17 September 2026 marks 97 years since the birth of Stirling Moss in London. The International Motorsports Hal...
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New MRI contrast agent detects one-millimetre lung tumours in animal studies
An experimental MRI contrast agent has identified lung tumours and metastases on the order of one millimetre i...
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“Close to Romanians”: A Support Initiative for the Romanian Community in the Netherlands
For Romanians living abroad, access to clear information and guidance can make a significant difference when p...
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OpenAI publishes six cases of unexpected AI model behaviour
On 16 September 2026 OpenAI published an internal framework for tracking, investigating and disclosing cases o...
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98 years since the Okeechobee hurricane, one of the deadliest disasters in US history
17 September 2026 marks 98 years since the Florida disaster linked to the 1928 Okeechobee hurricane. National...
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164 years since the Allegheny Arsenal explosion, the American Civil War’s deadliest industrial accident
17 September 2026 marks 164 years since the explosions at the Allegheny Arsenal in Lawrenceville, Pittsburgh....
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217 years since the Treaty of Fredrikshamn, under which Sweden ceded Finland to the Russian Empire
17 September 2026 marks 217 years since the Treaty of Fredrikshamn, known in Finnish as the Treaty of Hamina....
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15 years since the Occupy Wall Street movement began in New York
17 September 2026 marks 15 years since Occupy Wall Street began in New York’s financial district. The mobilisa...
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22 years since the opening of the Athens 2004 Paralympic Games
17 September 2026 marks 22 years since the opening ceremony of the Athens Summer Paralympic Games. The competi...
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