At the age of seven, Grace Hopper dismantled alarm clocks

Grace Hopper was inspired to join the armed forces after the attack on Pearl Harbor

Despite being too old to enlist and weighing below the required minimum to serve, Hopper was granted an exemption and assigned to work on the first electromechanical computer produced in the US. She and her team spent three months using the device to solve equations needed to design the implosion mechanism for the atomic bomb.

Later in life, the clock in Grace Hopper's office ran counterclockwise

Acknowledging that most people have "an enormous tendency to resist change," Hopper's clock served as a reminder for the computer scientist that just because things have been done a certain way does not mean they should forever remain that way: "They love to say, 'We've always done it this way.' I try to fight that." (Some users may experience a paywall.)

Explore a collection of media depicting major milestones from the life of Grace Hopper

The gallery features Hopper's meeting with President Ronald Reagan, her attendance at the groundbreaking of the Grace Murray Hopper Service Center—a Naval data processing facility—and her Presidential Medal of Freedom ceremony.

In 2017, Yale renamed one of its colleges to honor Grace Hopper

Founded in 1933, the Calhoun College—one of Yale's 12 undergraduate residential colleges—was renamed to Grace Hopper College in honor of the woman who earned a master's degree and PhD in mathematics from the university in the 1930s. The change was also made to distance the school from white supremacist John C. Calhoun.

English mathematician Ada Lovelace wrote the first computer algorithm a century before computers existed and hypothesized that computing devices would one day be able to compose music—foreseeing the generative AI systems of today.

English mathematician Ada Lovelace wrote the first computer algorithm a century before computers existed and hypothesized that computing devices would one day be able to compose music—foreseeing the generative AI systems of today.

NVIDIA named several computer chip architectures after Grace Hopper

Unveiled in 2023, the GH200 Grace Hopper Superchip, designed for generative AI applications in data center-scale systems, combines a Grace CPU with a Hopper GPU to create a coherent memory model. This allows the Hopper to access Grace data directly, reducing the need to repeatedly copy data back and forth and vastly improving performance.

The terms 'bug' and 'debugging' were popularized by Grace Hopper's team

Engineers working on the Mark II computer at Harvard University identified a moth in one of its components in 1947, which caused it to malfunction. Describing the incident as the "first actual case of bug being found," the term first used by Thomas Edison in 1878 to describe faults in an apparatus caught on.

A 2,000-year history of alarm clocks

Clocks have revolutionized the way we live, structuring our days into abstract, regular units and providing quantification for those who are chronically late. The alarm clock was the next obvious step: clocks which not only tell you the time but...

The story of Susy Thunder, the female hacker who disappeared

Here's the story of Susan Thunder, a woman who entered the hacker underground scene in the late 1970s and one day disappeared completely. She had a troubled past, facing abuse and hardship, and found solace in manipulating phone systems and later computer systems. She became involved with prominent hackers and her ability to control systems mirrored her quest for personal control. Her story highlights the role of social engineering in hacking.

The Antikythera mechanism is the oldest example of an analog computer

Remains of the 2,000-year-old hand-powered model of the solar system were uncovered in a shipwreck off the coast of Greece in 1900. It had been used to calculate the motions of the sun, moon, and planets to help forecast events such as solar eclipses.

Steve Jobs designed the original Mac calculator in 10 minutes

Unsatisfied with the designs provided by Chris Espinosa—Apple's youngest employee when he was hired at 14 in 1976—the engineer designed a program that gave Jobs access to every visual parameter, which he used to build the calculator's user interface.

The history of many kitchen appliances involves unexpected discoveries and applications, including wartime radar turned hamster defroster and replacing an 'ice king' with heat-stealing boxes.

The 'maiden of maiden voyages' who taught the world how to fly

In 1939, Clara Adams set the world record for the fastest person to circle the globe via commercial airliner, though she was a passenger and not a pilot. This article explores the impact of Adams' journey on the commercial flight industry. During...

The Wrights were inspired by a toy helicopter as kids

The pair tinkered with toys and dreamed of building a flying machine at a young age. Founders Podcast host David Senra read David McCullough’s 2015 book on the duo and distilled key insights for leaders to take from their work and lives, focusing on their relentless resourcefulness.

CES debuted in 1967 amid a wave of miniaturization in at-home electronics

The rapid development of integrated circuits—the basis of computing power—in the 1960s catalyzed an industrial shift toward miniature devices, including pocket transistor radios, smaller TVs, and more. This first consumer electronics trade show (with a slate of 117 exhibitors and 17,000 attendees) sought to make everyday electronics accessible and portable. See a timeline of early consumer tech with photos.

Austen left formal school at 9

Jane Austen was the seventh of eight children. At 9, her father, a clergyman in the Church of England, removed her and her sister from the Abbey School in Reading because he could not afford the tuition. Jane continued her education at home, where the family read aloud and performed plays.

Watch how the Enigma machine encrypts messages and learn about its critical design flaw

Using settings selected from a series of rotors and a plugboard that let operators swap letters with any of their choosing, the machine lit up the output letter for each letter typed. While this system could generate messages requiring any of 150 quintillion potential keys, the machine's reflector never encrypted a letter as itself, providing an entry point for exploiting the system.

Understanding how Billie Holiday's traumatic childhood led her to drugs

At 10 years old, the jazz singer was raped and then returned to House of the Good Shepard under protective custody. Her rapist was eventually convicted, but the court still sent her to an all-girls Catholic reform school. Jake Brennan, the host of the Disgraceland podcast, believes those early events led Holiday to the transcendent world of performing, but that it also led her to the escape of drugs.

Amateur engineers built America’s first great infrastructure project

With no engineering schools in the US, the Erie Canal was designed and built by self-taught amateurs who improvised new methods and became known as the “Erie School of Engineering.”

Estée Lauder's family ran a hardware store in Corona, Queens

Estée Lauder grew up organizing the storefront window of her father's hardware store, which her family lived above. Lauder was reportedly a natural salesperson, and her experience working with her father is frequently cited as her earliest business training.

Clever Hans was a 1900s horse that was believed to be able to solve math equations, tell time, and read and comprehend German, until a psychology student discovered how he got his answers.

Warren Buffett began investing at 11 years old

He then bought his first property at 14 years old. From studying under the “father of value investing” to revitalizing a textile company into the largest holding company in the world, Buffett’s career is one of great financial success.

Hubble overcame early optical failure and became a critical scientific instrument

The flaw in Hubble's mirror was smaller than the width of a human hair, but fixing it required a space mission as complex as a Hollywood rescue story—with astronauts installing corrective optics like contact lenses for a giant eye in the sky.

Who is the woman behind today's CPR doll?

According to a recent survey, about half of Americans know how to do CPR—many of whom learned on a mannequin called Rescue Annie. It turns out that this training doll may be based off a woman who became famous after drowning in the Seine, after...

Meet a 90-year-old who built his own hobbit-inspired house

A retired carpenter built himself a kind-of Hobbit house, and is living comfortably off the grid at 90 years old, tourists notwithstanding. Learn how he did it with this video.

The first robot in literature may have been a 'mechanical man' in 1907's 'Ozma of Oz,' a book in L Frank Baum's 'Wizard of Oz' series.

In its famous catalog, Sears sold $600 DIY house kits from 1908 through the 1940s, resulting in an estimated 100,000 'Sears and Roebuck homes.'

Clue, the murder-mystery board game, was designed during World War II air raids.

Inside the life of a 13-year-old beauty influencer

Thirteen-year-old Evelyn started posting get-ready-with-me style videos the summer before she entered 7th grade. Pull back the curtain on how she rose to internet fame through cutting observations of her peers at school, and how platforms like TikTok have responded to those under 13 joining the creator economy.

The name 'Silicon Valley' arose from the founding of Shockley Semiconductor Laboratory in Fairchild Semiconductor in 1956-57, founded near Stanford University in Palo Alto

When you complete a CAPTCHA on a website to prove you are human, you may be unknowingly training algorithms for self-driving cars, whose systems require training data to help identify crosswalks, bicycles, and other outdoor objects.

Elk Cloner, the first computer virus to spread in public, was written as a practical joke by Richard Skrenta, a Pittsburgh high school student.

Walt Disney's early film 'Alice's Wonderland' was a groundbreaking innovation in the silent film era

The story of Dollree Mapp, whose legal challenge over her 1957 conviction for possessing "obscene material" led to a major strengthening of the Fourth Amendment

A vending machine run with Anthropic's AI went out of business after it was convinced to give away items for free and sell a video game console.

After the Boston Tea Party, colonists switched to coffee, which became the main morning drink for revolutionaries.

In 1915, workers recovered a submarine-like vessel from the Chicago River, prompting fears of German espionage

Up to a million Girl Scouts sell about 200 million cookie boxes every spring, generating $800 million, largely because refusing a child is frowned upon

Explore chaos in this simulation of two double pendulums, where small differences in the release angles produce wildly different outcomes.

American short story writer Flannery O'Connor raised 40 peacocks, which became potent symbols for her fiction's elegant violence

American dance legend Martha Graham, sometimes called 'the Picasso of dance,' refused to perform at the 1936 Olympics in Berlin and conceived the piece 'Chronicle' in response to the experience.

Explore fun facts from the USPS, including unique post office buildings, a stamp that traveled past Pluto, and more.

For centuries, it was common to sleep in two shifts: a few hours at the beginning of the night, and a longer period beginning around midnight

Children are now three times more likely to say they want to be a YouTuber when they grow up than an astronaut, with some even attending 'YouTube camps' that teach kids how to create content for the platform.

How Amazon operates a 'flywheel' business model, a self-reinforcing cycle that drives continuous growth

Comedy legend Catherine O'Hara, star of 'Schitt's Creek' and 'Home Alone,' quit 'Saturday Night Live' after just one week to return to her old job.

Astronauts have repaired genetic damage in space using CRISPR—a molecular tool that can make precise changes to DNA and is used in single-celled organisms to attack invasive viruses.

For centuries, Niagara Falls has been a magnet for daredevils seeking to conquer one of nature's most powerful wonders, with its 200-foot drop and water rushing at 32 feet per second with 280 tons of force.

The first image of a black hole was captured by creating an Earth-sized virtual observatory from a network of eight radio telescopes.