How Does a Zipper Work?
A zipper turns one pull into a sequence of couplings. The slider does not glue the teeth. It guides them along...
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News
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WHO Warns Global Health Worker Shortfall Could Reach 11.1 Million by 2030
The World Health Organization said on 18 September 2026 that the global health-workforce shortfall could reach...
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Why Do Dogs Have Wet Noses?
A cold, wet nose is often taken as proof that a dog is healthy. Reality is narrower: a healthy animal may brie...
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131 years since the episode regarded as the beginning of modern chiropractic
18 September 2026 marks 131 years since the episode chiropractic tradition treats as a founding moment. The ac...
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Warren Buffett Steps Down as Berkshire Hathaway Chairman
Berkshire Hathaway said on Friday that Warren Buffett has been named chairman emeritus of the board, effective...
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More Than 1,500 Economists Call for International Action on Extreme Inequality
More than 1,500 economists and researchers from over 100 countries have signed an open letter asking leaders t...
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Hungarian Government Prepares to Change Adoption Rules for Single Applicants
The government led by Prime Minister Peter Magyar intends to amend Hungary’s 2020 law requiring single applica...
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How Does GPS Determine a Phone’s Position?
A phone does not ask a GPS satellite where it is, and the constellation does not track that handset individual...
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189 years since the store that became Tiffany & Co. opened
18 September 2026 marks 189 years since the New York store that became Tiffany & Co. first opened. Charles Le...
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EDF Plans Ten Small Modular Nuclear Reactors in Europe by 2035
EDF intends to develop ten small modular nuclear reactors in Europe by 2035, senior vice-president Vakisasai R...
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GlobalFoundries and Marvell Expand Chip Capacity for AI Data-Centre Connectivity
GlobalFoundries and Marvell Technology have expanded a multi-year agreement to increase production capacity fo...
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Why Does Salt Melt Ice on Roads?
Salt on ice does not burn like a flame. Its main effect is freezing-point depression: water with dissolved ion...
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524 years since Columbus’s expedition reached the coast of Costa Rica
On 18 September, anniversary calendars often recall Christopher Columbus’s expedition reaching the Caribbean c...
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Federal Judge Strikes Down US Policy Targeting Education Grants Linked to DEI
US District Judge Angel Kelley in Boston on Thursday struck down the Education Department policy that terminat...
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How Does a Thermos Keep a Drink Hot or Cold?
Coffee cools and cold water warms for the same reason: thermal energy moves from hot to cold. A thermos does n...
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António Guterres Warns of Risks from AI, Climate Change and Inequality
United Nations Secretary-General António Guterres warned, in an Associated Press interview four days before th...
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How Does a Rechargeable Battery Work?
A rechargeable battery does not hold electricity like a liquid. It stores chemical energy and turns it into cu...
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Macron Announces G7 Meeting Focused on the Energy Crisis
President Emmanuel Macron said on Friday, after a meeting at the Élysée with party leaders, that G7 countries...
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Bank of Japan Raises Interest Rate to 1.25%, a 31-Year High
The Bank of Japan on Friday raised its policy rate from 1% to about 1.25%, the highest level in 31 years. Jiji...
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67 years since Vanguard 3 launched to study Earth’s magnetic field
18 September 2026 marks 67 years since the scientific satellite Vanguard 3 launched from Cape Canaveral. NASA’...
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Eurogroup Says Euro-Area Economy Beat Expectations in the Second Quarter
Euro-area finance ministers met in Dublin on Friday, 18 September, under the chairmanship of Kyriakos Pierraka...
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Why Do We See Lightning Before We Hear Thunder?
Lightning and thunder are two faces of the same discharge. The channel heats violently; air expands and makes...
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US Weighs Preserving Most Pharmaceutical Licensing Deals with Chinese Firms
The US Treasury Department is drafting rules on China-related pharmaceutical investment that would, in the mai...
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98 years since the first English Channel crossing by a rotorcraft
18 September 2026 marks 98 years since the first English Channel crossing by a rotorcraft. The Vertical Flight...
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Major TV Makers Expand Voluntary Agreement to Reduce Energy Use
The Consumer Technology Association said on 16 September that major television manufacturers, operating-system...
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153 years since the collapse of Jay Cooke & Company triggered the Panic of 1873
18 September 2026 marks 153 years since Jay Cooke & Company suspended payments. Federal Reserve History ties t...
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EPA Eliminates Federal Greenhouse Gas Limits for Power Plants
The US Environmental Protection Agency has announced the repeal of federal rules that limited greenhouse-gas e...
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Why Do Bridges Have Expansion Joints?
The short noise at the end of a bridge is often an expansion joint. It looks like a break in the asphalt, but...
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China Rare Earth Group in Talks to Acquire Shenghe Resources, Sources Say
State-controlled China Rare Earth Group is in advanced talks to acquire Shenghe Resources, according to source...
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EU Proposes Unprecedented Association for Canada, but the Status Does Not Yet Exist
Ursula von der Leyen proposed on Wednesday, 16 September, in her annual State of the Union address, that Canad...
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Nestlé Weighs Options After Russia Places Its Local Operations Under Temporary Administration
Nestlé is reviewing its options after a Kremlin decree placed the Russian business under temporary external ad...
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US Prepares Restrictions on Canadian Goods in Federal Procurement
US President Donald Trump signed a presidential memorandum on 16 September directing officials to identify Can...
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