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  syringe exchange service 　　 　　Heroin and drug addiction Two hands holding a hypodermic syringe obtained through a syringe exchange service at a drug dependency unit in England. (more) syringe exchange service Ask the Chatbot a Question More Actions Share Share Share to social media Facebook X URL https://www.britannica.com/topic/syringe-exchange-service Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article...
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  History of Public Health: A Timeline 　　 　　Kabul: Ministry of Public Health A worker administers water-purifying tablets for the Ministry of Public Health in Kabul, 2005. (more) History of Public Health: A Timeline Ask the Chatbot a Question More Actions Share Share Share to social media Facebook X URL https://www.britannica.com/science/History-of-Public-Health-A-Timeline Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires...
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  Claude AI 　　Claude AI chatbot Ask the Chatbot a Question More Actions Share Share Share to social media Facebook X URL https://www.britannica.com/topic/Claude-AI Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). Feedback Type Select a type (Required) Factual Correction Spelling/Grammar Correction Link Correction Additional Information Other Your Feedback Submit Feedback Thank you for your...
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  Ranji Trophy 　　 　　Ranji Sir Ranjitsinhji Vibhaji, Maharaja Jam Sahib of Nawanagar, was the first Indian Test player. He was nicknamed Ranji. (more) Ranji Trophy Indian cricket tournament Ask the Chatbot a Question More Actions Share Share Share to social media Facebook X URL https://www.britannica.com/sports/Ranji-Trophy Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login)....
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  Zodiac Sign Calculator 　　Zodiac Sign Calculator astrology Ask the Chatbot a Question More Actions Share Share Share to social media Facebook X URL https://www.britannica.com/topic/Zodiac-Sign-Calculator Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). Feedback Type Select a type (Required) Factual Correction Spelling/Grammar Correction Link Correction Additional Information Other Your Feedback Submit Feedback Thank you for...
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  Protein Calculator 　　Protein Calculator human nutrition Ask the Chatbot a Question More Actions Share Share Share to social media Facebook X URL https://www.britannica.com/science/Protein-Calculator Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). Feedback Type Select a type (Required) Factual Correction Spelling/Grammar Correction Link Correction Additional Information Other Your Feedback Submit Feedback Thank you for...
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  Ranked-Choice Voting 　　 　　A ranked-choice ballot Is ranked-choice voting the best method of voting? (more) Ranked-Choice Voting Is Ranked-Choice Voting the Best Method of Voting? (Quick Take) Ask the Chatbot a Question More Actions Print print Print Please select which sections you would like to print: Table Of Contents Cite verifiedCite While every effort has been made to follow citation style rules,...
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  Julia Donaldson 　　 　　Writing in rhyme Julia Donaldson, author of illustrated children's books, among them the bestseller The Gruffalo. (more) Julia Donaldson English author Ask the Chatbot a Question More Actions Share Share Share to social media Facebook X URL https://www.britannica.com/biography/Julia-Donaldson Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). Feedback Type Select a...
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  Sue Bird 　　Sue Bird American basketball player Ask the Chatbot a Question More Actions Share Share Share to social media Facebook X URL https://www.britannica.com/biography/Sue-Bird Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). Feedback Type Select a type (Required) Factual Correction Spelling/Grammar Correction Link Correction Additional Information Other Your Feedback Submit Feedback Thank you...
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  Sweeney Todd: The Demon Barber of Fleet Street 　　 　　“The closest shave you'll ever know” Rod Gilfry (left) as Sweeney Todd and John Graham-Hall as Beadle Bamford at the Théâtre du Châtelet in Paris, 2011, during the dress rehearsal for the musical Sweeney Todd by American composer and lyricist Stephen Sondheim. (more) Sweeney Todd: The Demon Barber of Fleet Street musical by Sondheim Ask the Chatbot a Question...
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  Extreme Birds: 7 Wonders of the Avian World 　　 　　Bar-headed goose The bright orange-yellow feet and beak of this bird are as distinctive as the black bars on its head and neck. (more) Extreme Birds: 7 Wonders of the Avian World Ask the Chatbot a Question More Actions Share Share Share to social media Facebook X URL https://www.britannica.com/animal/Extreme-Birds-7-Wonders-of-the-Avian-World Feedback Corrections? Updates? Omissions? Let us know if you have...
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  nor’easter 　　nor’easter extratropical cyclone Ask the Chatbot a Question More Actions Share Share Share to social media Facebook X URL https://www.britannica.com/science/northeaster-wind Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). Feedback Type Select a type (Required) Factual Correction Spelling/Grammar Correction Link Correction Additional Information Other Your Feedback Submit Feedback Thank you for your...
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  Afghanistan-Pakistan Conflict (2025) 　　 　　Afghanistan-Pakistan skirmish in October 2025 A member of the Afghan Taliban standing over a military vehicle at a rally in Khost, Afghanistan, on October 13, 2025, amid days of deadly clashes between Afghanistan and Pakistan. (more) Afghanistan-Pakistan Conflict (2025) conflict Ask the Chatbot a Question More Actions Share Share Share to social media Facebook X URL https://www.britannica.com/topic/Afghanistan-Pakistan-Conflict-2025 Feedback Corrections?...
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  Kriti Sanon 　　 　　Kriti Sanon Bollywood actress Kriti Sanon poses at a photocall in 2024. (more) Kriti Sanon Indian actress Ask the Chatbot a Question More Actions Share Share Share to social media Facebook X URL https://www.britannica.com/biography/Kriti-Sanon Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). Feedback Type Select a type (Required) Factual Correction...
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  Reading market signals: The role of volume and open interest 　　 　　Watching liquidity flow.© Cagkan/stock.adobe.com, © Viktorus/stock.adobe.com; Photo illustration Encyclopædia Britannica, IncTraders like to “follow the money,” and in the futures markets, two clues can help: trading volume and open interest. 　　Picture the market as a bathtub with a flowing spigot and an open drain. The spigot is volume. The drain is day traders and those closing positions. What about...
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  Futures delivery basics: Cash vs. physical 　　 　　No one will dump commodities in your driveway.© Faraways/stock.adobe.com, © BillionPhotos.com/stock.adobe.com; Photo illustration Encyclopædia Britannica, IncThe concept of delivery is fundamental to the origin story of the American futures market, going all the way back to the years before the Civil War when a group of grain merchants gathered at what became the Chicago Board of Trade to buy...
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  Peter Wilkinson Howitt 　　 　　Canadian economist Peter Howitt, cowinner of the 2025 Nobel Prize for Economics.© 2013 Ashley McCabe/Brown UniversityTop Questions What is Peter Howitt known for in economics? Peter Howitt is known for his theoretical work on innovation, technological change, and long-term economic growth, particularly his development of the Schumpeterian model of endogenous growth with Philippe Aghion. What is the Schumpeterian model...
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  Philippe Aghion 　　 　　French economist Philippe Aghion, cowinner of the 2025 Nobel Prize for Economics.© Joel Saget—AFP/Getty ImagesTop Questions What is Philippe Aghion known for? Philippe Aghion is known for his research on innovation, competition, and economic growth, particularly his work on the Schumpeterian model of endogenous growth and the concept of creative destruction. When did Philippe Aghion win the Nobel Prize...
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  creative destruction 　　 　　Creative destruction hits the assembly line. © THINK b/stock.adobe.comTop Questions What is creative destruction? Creative destruction is the ongoing process through which innovation reshapes an economy from within. New products, technologies, and ways of doing business replace those that no longer meet current needs, driving progress but also displacing older firms and industries. Who introduced the term creative destruction?...

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