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TimeTime is a dimension where events can be mapped based on when they occur. Just as distance measures how far two locations are from one another on a map, duration measures how far two events are from one another in the time dimension. Without this dimension, we would not be able to contrast events and observe change in the universe. Historically, time intervals have been quantified by counting the repeating motion between events, such as the apparent motion of the sun in the sky. Replacements involving consistent motion that repeats more frequently—swinging pendulums, vibrating crystals, and oscillating atoms—enabled more precise plotting of events along the time dimension. While three-dimensional motion through space is possible in any direction, our perception is that time flows only from the past to the future. The second law of thermodynamics states that the entropy, or disorder, of the universe cannot decrease, preventing certain events from occurring after others and imposing this "arrow of time." However, relativity combines time and space into a single structure—spacetime—and just as all of space exists, so does all of time, making perceptions of the past, present, and future illusory. The theory also explains why the passage of time slows the more one moves through space and the stronger the gravity one experiences. By contrast, time is considered a background parameter in quantum physics, independent of one's motion or location, contributing to the incompatibility of quantum mechanics with general relativity.Explore Time
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Real-time tracking of individual hair cells has revealed that hairs don't actually get pushed out from the root—instead, hair cells are tugged upward by surrounding tissues that act like tiny motors. NewsweekRead Time Magazine's profile of Estée Lauder—the only woman named to a list of the most influential business leaders of the 20th centuryTime Magazine's 1998 profile of Estée Lauder credited much of Lauder's global success to her incredible work ethic and her dedication to creating the highest-quality products, even if those products weren't trendy. TIMEWhy time ticks faster on the moon, which may need its own time zoneBecause Earth exerts a stronger gravitational pull than the moon, it lags behind between 56 and 59 microseconds each day, or about one second every 46.5 years. This impacts essential synchronous operations of future electronic equipment on the lunar surface, which could be alleviated by a standardized conversion system between Earth and moon time zones. Discover MagazineRead a timeline of all of Elon Musk's business ventures, from the software company Zip2 in the 1990s to Musk's Twitter acquisition. TIMETime magazine named Ray Dalio one of the 100 most influential people in 2012Dalio's profile, written by former Federal Reserve Chairman Paul Volcker, praised Dalio for his investment strategy and his deep understanding of economics, if unorthodox at times. Volcker particularly appreciated Dalio's support for the Federal Reserve's handling of the 2008 financial crisis. Dalio and Volcker were longtime friends—Dalio has referred to Volcker as "the most principled man" he knows. TIMEA timeline of the Stamp Act crisis from the view of Colonial WilliamsburgColonial Williamsburg's timeline situates the act within the local political culture of Virginia: colonists accustomed to taxing themselves through their own representatives in Williamsburg's House of Burgesses were outraged that Parliament could reach into their pockets from across the ocean. The timeline also covers Patrick Henry's proposed "Resolves," which prompted shouts of "treason" from his co-legislators, as well as commemorative objects (buttons, teapots) that followed the repeal. Colonial WilliamsburgA timeline of how Claude Code was used to execute cyberespionageIn September 2025, a Chinese state-sponsored group targeted 30 large tech companies, financial institutions, chemical manufacturing companies, and government agencies by manipulating Claude Code, having succeeded in infiltrating a small subset. The cyberattack is believed to have been the first of its scale carried out without major human intervention. AnthropicTime crystals are systems of atoms organized into periodic patterns of motionUnlike traditional crystals—whose atomic structures cause them to look identical no matter how you look at them in space—time crystals exhibit this behavior through time, where the motion of atoms will bring them to the same positions relative to one another regularly. IFLScienceBranching timelines are allowed and resolve grandfather paradoxes in physicsAccording to quantum physics, traveling back in time to kill one's grandfather would not cause a paradox because time travel would bring one to a new timeline, where the person killed is not one's grandfather. Alternatively, causality would not be violated because the universe would prevent the murder from occurring. Space.comTime seems to stop for objects at the event horizon of black holesAt that location, the warping of space-time is so severe that the entirety of an object's space-time motion is solely through space, leaving it immobile in the time dimension. Faraway observers looking at the object would see it appear frozen before slowly dimming and reddening. NASATime disappears when encompassing all quantum configurations across the universeThe Wheeler-DeWitt equation, a modified version of the Schödinger equation—the formula that describes the evolution of the quantum configuration of a system—describes the quantum state of space-time across the universe. The transformation causes the variable of time to disappear, suggesting it is not a fundamental, physical parameter of the cosmos. Quanta MagazineEarly timekeeping tools included sundials, water clocks, and astrolabesAstrolabes also provided a person's latitude based on the height of the stars in the sky, thus aiding in navigation. Incense and candle clocks relied on the constant burning rate of fire to track the passage of time based on premarked locations with equal-interval spacing. History.comTime magazine ran a cover story titled 'The End of the World as We Know it?' in January 1999In January 1999, Time published a dramatic Y2K cover with apocalyptic imagery and dire headlines. The portrayal likely exacerbated public fear and magnified the crisis in the popular imagination, turning a technical issue into a cultural panic. TimeThe Times Square New Year's ball has been redesigned 8 timesThe first iteration was made of iron and wood, weighing in at 700 pounds. The 2025 version is made of 5,280 crystals and 32,256 LED lights and weighs a whopping 12,350 pounds. Times Square NYCThe Times Square New Year's celebration originated as a party for The New York TimesThe paper moved to the area, originally called Longacre Square, in 1904 and lobbied the city to rename it after the publication. The paper’s publisher, Alfred Ochs, threw a massive all-day party on New Year’s Eve to celebrate the opening of the paper’s headquarters, establishing the location as a destination for the holiday. NPRA timelapse mapping more than 30,000 Transatlantic slave ship voyagesRoughly 12 million people from Africa were forcibly moved to North and South America over two centuries. This map meticulously showcases every ship's origin, destination, timeline, and more, revealing the scale of the Transatlantic slave trade. Slave VoyagesView a timeline of AI deployments from 2017 to 2025The development of transformer architecture and the release of GPTs across AI labs led to rapid changes in LLM scale and power. Companies like OpenAI, Google, Meta, Microsoft, and Anthropic have invested billions of dollars to develop reliable, versatile models. Visual CapitalistA timeline of major pandemics from 1899–2025Modern pandemics have been defined by the race between globalization (which increases risk) and the development of new medicines. The Great Influenza epidemic claimed some 50 million lives, and the COVID-19 pandemic killed more than 7 million. In between, diseases like Ebola, cholera, AIDS, and more have devastated communities. Council on Foreign RelationsOver time, the World Cup became a TV powerhouse, generating massive revenue from broadcast rights and ad placements.This Bleacher Report article traces the FIFA World Cup’s evolution from a sports celebration to a commercial giant. The article shows how the World Cup now involves significant financial and political influence to select host countries and sponsors. Learn about the influences of João Havelange's presidency from 1974 to 1998, and how broadcasting rights changed revenues. Bleacher ReportA timeline of the science of taste discoveriesThe tongue is made up of four types of papillae—elevated, nipple-like projections that give the organ its rough texture. In the early 1900s, initial research into the tongue's varying taste sensitivity led to a misleading map of the tongue and its taste regions. Over the decades, researchers fleshed out five distinct tastes (and more recently, a sixth). NatureWatch a timeline of Tencent—one of China's earliest tech giants—despite the company's low profile. Tencent has had several landmark moments over the last 27 years. This video explains its journey from its 1998 founding in Shenzhen, China, by Pony Ma, Zhang Zhidong, Xu Chenye, Chen Yidan, and Zeng Liqing. Learn about the Chinese firm’s growth in the early 2000s, the launch of WeChat, and its rise to become one of the most valuable companies in the world. 1440Understanding time dilationThe faster you go, the slower time ticks for you. And the stronger the gravitational field acting on you, the slower time ticks for you. These phenomena – collectively called time dilation – were first explained by Albert Einstein’s theories of general and special relativity. In this 11-minute video, beloved astrophysicist Neil deGrasse Tyson explains them to comedian Chuck Nice. StarTalkIs time travel really possible?The laws of physics, as currently understood, don’t categorically reject the possibility of time travel. But, scientists are skeptical, especially when it comes to traveling to the past. Hopping between past, present and future would require the world to have some wacky yet-to-be-discovered physical properties like negative mass, negative energy, and infinite density. Time travel also introduces philosophical questions about free will, causality, and chronology. Scientific AmericanA timeline of the Rockefeller familyThe Rockefeller family timeline (as it relates to the business world, at least) starts in 1839 with John D. Rockefeller’s birth. In the nearly 200 years since, his offspring have gotten involved in everything from the Watergate scandal to the McCormick & Company spice business. PBSThe time Bob Dylan was accused of plagiarizing ‘Blowin’ in the Wind’“Blowin’ in the Wind” is a defining song of the Civil Rights Movement, one that Dylan openly acknowledged was based on a traditional African spiritual. But when Newsweek accused Dylan of stealing the song in 1963, they weren’t talking about influence. They suggested he’d jacked the tune from a helpless high school student. This article breaks down the falsehood and why it was given so much attention while Dylan was becoming a household name. American SongwriterA timeline of LIV Golf, the PGA Tour's primary rivalIn 2021, the rival professional league LIV Golf Investments was unveiled. It was a move that reshaped men's professional golf. This Sports Illustrated Timeline dives into the twists and turns occurring since the announcement. Learn what star players left the PGA for LIV. Also, get details about the mutual agreement outlined in 2023, which has yet to come to fruition. Sports IllustratedFull-time employees can cost up to 1.4 times as much as an independent workerWhile gig work jobs often have a low barrier to entry and flexible work hours, there are a few downsides to the sector, too. For instance, gig work platforms like Airbnb likely won’t pay for an Airbnb host’s health insurance or paid time off. How Money WorksSee every time the minimum wage has been raised.Unlike some other nations, the US minimum wage isn’t tied to inflation. So instead of it automatically rising alongside the cost of living, Congress has to vote to raise the minimum wage every time they think it’s necessary. To see every single time the US has raised the minimum wage since 1938, watch this video. TIMEA timeline of Google's growthAs of 2025, Google will approach its third decade of existence. A period that's seen the company go from dominating the search market to the launch of one billion-user product after another, from Gmail to YouTube. This detailed timeline lays out what happened when, laying out Google's history in detail. It marks key milestones, like the introduction of Google Maps, and what year they happened. UpgrowA timeline of Wall Street's historyWall Street's historical timeline starts with Wall Street getting its name in the 1600s and ends with details about the Occupy Wall Street movement in 2011. PBSTimeline of women in labor historyIn 1866, newly freed black women working as laundresses in Jackson, Mississippi, formed a union and went on strike for higher wages. But it wasn't until 1974, that the Coalition of Labor Union Women was founded as America's only national organization for union women. Want to find out more about the history of women in the labor movement? Click here for the full timeline. AFSCMESee a timeline of the Cuban RevolutionA small rebel force toppled Batista through a series of unlikely breaks, including a decisive 1958 ambush in which Castro’s fighters seized an arms train bound for Santa Clara. This timeline charts the revolution’s causes, key turning points, and enduring legacy. Trinity CollegeExplore a timeline tracing the Soviet Union’s collapse from 1985 to 1991This interactive webpage charts the USSR’s final years—from Gorbachev’s rise to the 1991 dissolution—using infographics, key quotes, and profiles of prominent political figures to explain how the Soviet state unraveled, and Russia emerged in its place. Radio Free Europe/Radio LibertyA timeline of computer historyThe earliest computers bear little resemblance to the computing devices that most people rely on today. This timeline graphic from the Computer History Museum tracks their evolution, from the early days of bulky mainframes that only experts generally used through to the personal computing revolution and on to the modern mobile era. Readers will learn important context ahead of the next major computing platform shift. Computer History MuseumA timeline of sports-betting scandalsThis timeline examines memorable moments from three decades of sports-betting history. It breaks down key political moments, as well as some historical moments such as when the internet pushed underground bookmaking online. There are also multiple descriptions of betting scandals from 1989 on. ESPNA timeline of the ancient GreeksWhen exactly were the Ancient Greeks around on Earth? Their roots go back nearly 9,000 years to the Bronze Age with the so-called Minoan civilization. These sea-faring tribes would come together to hold off the invading Persian Empire and culminate in the glories of Athenian democracy, Spartan military discipline, and more. Check out this thorough timeline of the Ancient Greeks. History CooperativeThat time British slavers killed enslaved people and filed for insurance reimbursementIn 1781, a British slave ship tossed 132 enslaved Africans overboard, leaving them to drown. This 52-minute podcast explores the context behind the massacre and its implications.
The slavers of the ship named Zong sought insurance reimbursement for... BBCA timeline of Russia-North Korea relationsNorth Korea and Russia have often had aligned interests, yet their relationship has experienced many highs and lows. Al Jazeera’s explainer outlines the key events defining Russia-North Korea relations.
Russia and North Korea were allies during... Al Jazeera EnglishThat time two journalists raced around the world in 80 daysIn 1889, Journalist Nellie Bly, née Elizabeth Jane Cochran, set sail on a journey around the world to compete with Phileas Fogg, the protagonist of the 1872 fiction novel "Around the World in Eighty Days." This short video explains how competing... Drunk HistoryTimeline: the Kurds’ quest for independenceThe Kurds have a long history of fighting for rights and regional autonomy across the Middle East. After WWI, when the Middle East was reconfigured, the Kurds were dispersed across the new borders of previous Ottoman territories. The idea of an... Council on Foreign RelationsTimeline: the Middle East conflictDuring the First World War, Western and Arab powers negotiated the future political status of Arab lands. Since WWI, a complex history of political, economic, and social events have fueled tension and violence between Israel and Palestine. This timeline, compiled by Al Jazeera, highlights important global events defining conflict in the Middle East from 1915 to 2007. Al Jazeera EnglishA timelapse of sprouting seedsGermination is the process where an organism sprouts from a seed or spore. This timelapse captures the process in an inspiring, two-minute video so you can see the whole story of the seed quickly. YouTubeA timeline and visuals on TikTok's rapid growthThe app that would become TikTok is known as Douyin in China, and this article recounts its history, acquisition of rival Musical.ly, and rebranding ahead of its lightning growth. One visualization shows how quickly TikTok reached 1B users. Influencer Marketing HubA timeline of US immigration lawsThe United States began regulating immigration soon after it won independence from Great Britain, and the laws since enacted have reflected the politics and migrant flows of the times. Here's a timeline of key immigration laws from 1790 to 2014, according to the Pew Research Center. Pew Research CenterThat time General Ulysses Grant barred Jewish residents from the war zoneIn 1862, General Ulysses S. Grant issued an order that banned all "Israelites" (meaning Jews) from a military zone consisting of parts of Tennessee, Kentucky, and Mississippi. After much outcry, the order was rescinded by President Abraham Lincoln and Grant feebly explained it was a misunderstanding. Learn more about this odd bit of history here, POLITICOA timeline of colonial settlementAn overview of early American settlement, beginning with the London Company's expedition to Virginia. Source includes a number of citations for further reading. Library of CongressA timeline of key events during each period of Egyptian historyThis timeline shows the dates, periods, dynasties, and significant events in the history and art of ancient Egypt from the Predynastic Period (before 3100 BCE) to the end of the Roman Period (395 CE). Australian MuseumA timeline of human fossil discoveriesA key part of writing a coherent story about our origins is finding and identifying the remains of our ancestors and understanding their significance. Scientists will not always agree on identifications and opinions will change as new find are made and new ways of studying them are developed. Australian MuseumAn interactive timeline of history, from beginning to middleThe history of humanity is a long, winding road, and the history of everything else is even more complex and interwoven. This interactive timeline takes users through the history of the world and includes links to related videos, blurbs, and events. Each event in history is represented by a dot, providing users with a glittering horizon filled with moments of intrigue and impact. Timeline of HistoryTimeline of cancer research milestonesWhile cancer remains incurable, there's been so much progress in its treatment over the last two decades. Nature provides an abridged history of milestones and major triumphs in cancer research and treatment. Start in the year 2000, and see how much has changed in the first quarter of the new millennium Nature
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