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Scientists and Inventors Who Changed the World

Twenty-seven scientists and inventors, from Archimedes to Stephen Hawking, with the surprising habits, failures and discoveries behind their fame.

Updated November 1, 2026 · 27 items · 405 facts in the linked articles · Reading time 10 min

Some of the greatest ideas in history came from people with very ordinary habits and very strange ones. This collection gathers twenty-seven scientists and inventors, from Archimedes in ancient Greece to Stephen Hawking, and shows the human side of discoveries that changed the world.

Their paths rarely ran straight. Darwin dropped out of medical school because he could not stand blood, Edison had only three months of formal schooling, and Faraday started out as a bookbinder's apprentice. Fleming joined his hospital for the water polo, and Mendel failed his teaching exams twice before his pea plants made him the founder of genetics.

Quirks follow the genius. Newton worked as an undercover detective chasing counterfeiters, Turing chained his teacup to a radiator, Tesla was obsessed with the number three, and Einstein refused to wear socks. Others were far ahead of their time: Ada Lovelace published the first computer algorithm, and Grace Hopper created the first compiler.

Several of them mapped the heavens with surprisingly little equipment. Copernicus researched the cosmos without a telescope, Kepler worked out his laws of planetary motion without one, and Galileo, who did not invent the telescope, used one to show that the Moon is rough and cratered and that Jupiter has moons of its own.

Many also saw their work ignored, doubted or punished. Mendel's discoveries went unnoticed for 35 years, Galileo spent his final years under house arrest, and Marie Curie remains the only person to win Nobel Prizes in two different sciences. Explore the articles below to meet them.

The short version

Every item on this page, with the one fact most people get wrong about it.

Name Where you'll meet it The fact worth knowing
Isaac Newton Physics & Mathematics, 1643-1727 He worked as an undercover detective catching counterfeiters.
Charles Darwin Biology, 1809-1882 He belonged to a college club dedicated to eating rare exotic animals.
Marie Curie Physics & Chemistry, 1867-1934 She is the only person to win Nobel Prizes in two different scientific fields.
Albert Einstein Physics, 1879-1955 The FBI amassed a 1,400-page file on him.
Nikola Tesla Electrical Engineering, 1856-1943 He fell in love with a pigeon.
Thomas Edison Invention, 1847-1931 His formal schooling lasted only three months.
Alexander Fleming Medicine & Microbiology, 1881-1955 His messiness saved the world: a neglected dish led to penicillin.
Galileo Galilei Astronomy & Physics, 1564-1642 His middle finger is preserved on display in Florence.
Nicolaus Copernicus Astronomy, 1473-1543 He researched the cosmos entirely without a telescope.
Leonhard Euler Mathematics, 1707-1783 Total blindness only increased his output.
Carl Friedrich Gauss Mathematics & Physics, 1777-1855 At age three he reportedly corrected his father's payroll calculations.
Archimedes Mathematics & Engineering, c. 287-212 BC He invented a monstrous iron claw said to flip Roman warships.
Stephen Hawking Physics & Cosmology, 1942-2018 He hosted a party for time travelers and sent the invitations only after it was over.
Ada Lovelace Mathematics & Computing, 1815-1852 She wrote the world's first published computer algorithm.
Michael Faraday Physics & Chemistry, 1791-1867 He discovered electromagnetic induction without using any math.
Alexander Graham Bell Communication, 1847-1922 He filed his telephone patent just hours before a rival.
Grace Hopper Computer Science, 1906-1992 She helped popularize the term computer "debugging."
Alan Turing Mathematics & Computing, 1912-1954 He chained his teacup to a radiator to stop it being stolen.
James Clerk Maxwell Physics, 1831-1879 He produced the world's first permanent color photograph.
Gregor Mendel Genetics, 1822-1884 He grew more than 28,000 pea plants, and his work was ignored for 35 years.
Max Planck Physics, 1858-1947 A reluctant revolutionary, he started quantum theory almost against his will.
Louis Pasteur Chemistry & Microbiology, 1822-1895 He invented pasteurization for wine and beer, not milk.
Johannes Kepler Astronomy, 1571-1630 He wrote what is considered the first science fiction novel.
Benjamin Franklin American polymath and inventor He never stood in a field waiting for lightning to strike his key.
Johannes Gutenberg German printing pioneer His family name, Gensfleisch, means "goose flesh".
Srinivasa Ramanujan Self-taught Indian mathematician He instantly saw why 1729, the number of a taxi, was remarkable.
War of the Currents Edison vs Tesla and Westinghouse Tesla tore up his royalty contract to save Westinghouse from ruin.

Record holders

Longest Ignored Discovery

35 years

Mendel's pea plant experiments went unnoticed for 35 years before being rediscovered in 1900. Gregor Mendel

Biggest FBI File

1,400 pages

The FBI amassed a 1,400-page file on Albert Einstein. Albert Einstein

Most Pea Plants Grown

28,000+ plants

Mendel cultivated more than 28,000 pea plants while tracking seven specific traits. Gregor Mendel

Most Alchemy Writing

1,000,000+ words

Newton wrote over a million words on secret alchemy. Isaac Newton

All 27, one fact at a time

The Reluctant Genius: 15 Fascinating Facts About Sir Isaac Newton

Isaac Newton

Physics & Mathematics, 1643-1727

Isaac Newton was born prematurely and tiny, and the falling apple story is a myth that never hit his head. He lived and worked inside the Tower of London and accidentally established Great Britain's gold standard. He wrote over a million words on secret alchemy, fought a decades-long war over calculus, and lost decades of research in a devastating fire.

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The Reluctant Revolutionary: 15 Fascinating Facts About Charles Darwin

Charles Darwin

Biology, 1809-1882

Charles Darwin dropped out of medical school because of a horror of blood, and the captain of the HMS Beagle nearly rejected him over the shape of his nose. The voyage stretched from two years into five. He then sat on his theory of evolution for more than two decades, spent eight years dissecting barnacles and even tested earthworm hearing by playing the piano for them. He was buried in Westminster Abbey.

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The Radioactive Pioneer: 15 Fascinating Facts About Marie Curie

Marie Curie

Physics & Chemistry, 1867-1934

Marie Curie named polonium after her homeland as an act of political resistance and refused to patent the process for isolating radium. She worked in a leaky wooden shed, ran mobile radiology units on the front lines of World War I and was rejected by the French Academy of Sciences. Her personal belongings are still radioactive, and she rests in the Panthéon in a lead-lined coffin.

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The Relativistic Mind: 15 Fascinating Facts About Albert Einstein

Albert Einstein

Physics, 1879-1955

The myth that Albert Einstein failed math is completely false. His revolution in physics started in a patent office, and 1905 became his miracle year. His Nobel Prize was not awarded for relativity, and he famously refused to wear socks. He played the violin to help him think, was offered the presidency of Israel, and was an avid sailor who never learned to swim.

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Sparks of Genius: 15 Obscure Facts About Nikola Tesla

Nikola Tesla

Electrical Engineering, 1856-1943

Nikola Tesla had a severe obsession with the number three, an extreme phobia of pearls and a true photographic memory. He worked digging ditches for Edison, pioneered early X-rays and was an early champion of renewable energy. He even predicted the modern smartphone. The failure of the Wardenclyffe Tower ended his big plans, and he died penniless and alone.

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The Wizard of Menlo Park: 15 Fascinating Facts About Thomas Edison

Thomas Edison

Invention, 1847-1931

Thomas Edison ran a mobile chemistry lab on a moving train and saw his severe hearing loss as a secret advantage. He nicknamed his first two children Dot and Dash and proposed to his second wife using Morse code. He built the world's first movie studio, waged the War of Currents and co-founded General Electric. His talking dolls, meanwhile, terrified children.

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The Accidental Savior: 15 Unique Facts About Alexander Fleming

Alexander Fleming

Medicine & Microbiology, 1881-1955

Alexander Fleming joined St. Mary's hospital just to play water polo and was recruited for his sharpshooting skills. A sneeze led to his first breakthrough, and he painted art with live germs. He did not purify penicillin himself, but he predicted antibiotic resistance in 1945. He was intensely modest and was buried in St. Paul's Cathedral.

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The Starry Messenger: 15 Fascinating Facts About Galileo Galilei

Galileo Galilei

Astronomy & Physics, 1564-1642

Galileo Galilei originally enrolled in college to study medicine, and he did not invent the telescope. He used one to prove the Moon was rough and cratered, to discover the moons of Jupiter, and he thought Saturn had ears. The Inquisition sentenced him to house arrest for life, and he went blind in his final years. The Vatican did not formally clear his name until 1992.

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The Revolutionizing Canon: 15 Fascinating Facts About Nicolaus Copernicus

Nicolaus Copernicus

Astronomy, 1473-1543

Nicolaus Copernicus practiced medicine without a medical doctorate and led a castle's defense against knights. He formulated Gresham's Law before Gresham, and he openly credited ancient Greek thinkers for the core idea of his model. An unauthorized preface tricked readers for centuries, and the Catholic Church did not ban his masterpiece for over 70 years. Scientists confirmed his resting place using DNA from his hair.

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The Unstoppable Genius: 15 Fascinating Facts About Leonhard Euler

Leonhard Euler

Mathematics, 1707-1783

Leonhard Euler is the most prolific mathematician in history. Solving the Seven Bridges of Konigsberg created graph theory, and he solved the Basel problem at age twenty-eight. He helped standardize the language of modern math, defined the constant e and invented Latin squares, the precursor to Sudoku. Frederick the Great ridiculed him as the Mathematical Cyclops, and he was still calculating planetary orbits on his final day.

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The Mathematical Titan: 15 Fascinating Facts About Carl Friedrich Gauss

Carl Friedrich Gauss

Mathematics & Physics, 1777-1855

Carl Friedrich Gauss outsmarted his schoolmaster with a mathematical shortcut and solved a 2,000-year-old geometry problem as a teenager. He proved the Fundamental Theorem of Algebra at twenty-one and rescued the lost dwarf planet Ceres using statistics. He built an operational telegraph line before Samuel Morse, taught himself Russian at sixty-two, and died wealthy. A fundamental unit of magnetism is named after him.

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The Mind of Syracuse: 15 Fascinating Facts About Archimedes

Archimedes

Mathematics & Engineering, c. 287-212 BC

The famous bathhouse moment of Archimedes may be a legendary exaggeration. He rigged a compound pulley that dragged a loaded battleship, and he calculated pi using 96-sided polygons. His water screw is still used in modern engineering, and he invented a number system to count the grains of sand in the cosmos. His favorite mathematical achievement was carved on his tombstone.

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The Infinite Mind: 15 Fascinating Facts About Stephen Hawking

Stephen Hawking

Physics & Cosmology, 1942-2018

Stephen Hawking defied medical prognoses for over five decades. As a student he was nicknamed Einstein despite being average, and he steered Oxford's rowing team as coxswain. He floated in zero gravity at age sixty-five, lost a famous bet on black holes, and was sampled by Pink Floyd on their 1994 album. He never won a Nobel Prize, and his final equation is carved near the graves of Newton and Darwin.

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The Poetical Scientist: 15 Fascinating Facts About Ada Lovelace

Ada Lovelace

Mathematics & Computing, 1815-1852

Ada Lovelace was the only legitimate child of Lord Byron and coined the term poetical science to bridge imagination and logic. At twelve she researched flying machines, and she began working with Charles Babbage after seeing his Difference Engine. She compared computing to the weaving patterns of the Jacquard loom and published her notes under the initials A.A.L. A programming language named Ada honors her.

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The Self-Taught Genius: 15 Fascinating Facts About Michael Faraday

Michael Faraday

Physics & Chemistry, 1791-1867

Michael Faraday was entirely self-taught as a bookbinder's apprentice and invented the world's first electric motor. He also invented the Faraday cage and coined scientific terms we still use every day. He refused to build chemical weapons for the military and turned down both a knighthood and the presidency of the Royal Society. Einstein kept his portrait on the office wall.

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The Polymathic Pioneer: 15 Fascinating Facts About Alexander Graham Bell

Alexander Graham Bell

Communication, 1847-1922

Alexander Graham Bell built his first machine at twelve, and his lifework was motivated by deafness in his family. He considered his greatest invention to be the photophone and refused to keep a telephone in his own study. He built an early metal detector to try to save a U.S. president, built giant tetrahedral kites to pursue human flight and set a world water speed record at age 72. Millions of telephones went silent during his funeral.

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The Digital Pioneer: 15 Fascinating Facts About Grace Hopper

Grace Hopper

Computer Science, 1906-1992

Grace Hopper earned a doctorate from Yale and had to overcome Navy standards to enlist. She wrote the manual for the Harvard Mark I, created the world's first compiler and helped pioneer COBOL for business. She used a physical piece of wire to show people how long a nanosecond is, and she believed in asking forgiveness rather than permission. She retired as a Rear Admiral and has a guided-missile destroyer named in her honor.

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The Decoding Genius: 15 Fascinating Facts About Alan Turing

Alan Turing

Mathematics & Computing, 1912-1954

Alan Turing was an Olympic-level marathon runner who once rode his bike wearing a gas mask to beat hay fever. He devised the Turing Test, wrote the first computer chess program before the hardware existed and founded mathematical biology. His wartime codebreaking saved millions of lives. He received a royal pardon decades after his death and now appears on the British fifty-pound note.

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The Luminous Genius: 15 Fascinating Facts About James Clerk Maxwell

James Clerk Maxwell

Physics, 1831-1879

James Clerk Maxwell published his first Royal Society paper at fourteen and was nicknamed Dafty at school. He solved the mystery of Saturn's rings and unified electricity, magnetism and light in equations later streamlined by Oliver Heaviside. He predicted radio waves long before they were discovered and designed the Cavendish Laboratory. Einstein kept his portrait on the study wall, and he died young of the same disease as his mother.

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The Patient Father of Genetics: 15 Fascinating Facts About Gregor Mendel

Gregor Mendel

Genetics, 1822-1884

Gregor Mendel was born Johann and failed his teaching exams twice. He carefully tracked seven specific traits across more than 28,000 pea plants, yet Darwin never read his paper and his breakthrough was ignored for 35 years. Three scientists rediscovered his work in 1900. Mendel never used the word gene, and he was also a passionate beekeeper.

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The Reluctant Quantum Pioneer: 15 Fascinating Facts About Max Planck

Max Planck

Physics, 1858-1947

Max Planck could have been a professional musician, and a professor advised him against studying physics. He became an early champion of Albert Einstein and won the 1918 Nobel Prize in Physics. He directly confronted Adolf Hitler, and his son was executed for plotting against Hitler. His home and research were destroyed in World War II, and he was rescued by American troops at age 87.

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The Unstoppable Chemist: 15 Fascinating Facts About Louis Pasteur

Louis Pasteur

Chemistry & Microbiology, 1822-1895

Louis Pasteur was a trained chemist and never a medical doctor. His swan-neck flasks permanently disproved spontaneous generation, and he rescued the French silk industry from biological collapse. His rabies vaccine was crafted from the spinal cords of infected rabbits, and the first human patient later guarded his crypt. He suffered a stroke at age 45 and is entombed in a mausoleum beneath his own institute.

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The Celestial Mathematician: 15 Fascinating Facts About Johannes Kepler

Johannes Kepler

Astronomy, 1571-1630

Johannes Kepler originally trained to be a Lutheran minister and discovered the laws of planetary motion without ever using a telescope. He shattered two thousand years of perfect circles and inherited Tycho Brahe's data after a bitter feud. He saved his mother from being burned as a witch and earned a living as an imperial astrologer. His third law still guides NASA spacecraft, but he died in poverty.

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 15 Fascinating Facts About Benjamin Franklin: The Electrifying Polymath

Benjamin Franklin

American polymath and inventor

Franklin coined the words "battery" and "conductor", charted the Gulf Stream and invented bifocals and the glass armonica, yet patented none of them. He wrote as "Silence Dogood" at 16 and is in the International Swimming Hall of Fame. He also wrote an essay called "Fart Proudly".

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15 Interesting Facts About Johannes Gutenberg

Johannes Gutenberg

German printing pioneer

Gutenberg did not invent movable type, but the former goldsmith created a new metal alloy, oil-based ink and a press adapted from wine presses. He printed indulgences for cash and lost his business just before his Bible was finished. Only 49 Gutenberg Bibles survive, and no one knows what he looked like.

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The Infinite Mind: 15 Fascinating Facts About Srinivasa Ramanujan

Srinivasa Ramanujan

Self-taught Indian mathematician

Ramanujan taught himself from a single synopsis of results and mailed over 120 theorems to G. H. Hardy at Cambridge. He compiled nearly 4,000 formulas, many proved only later, and was elected to the Royal Society in 1918. His lost notebook turned up in 1976, and his work now helps physicists study black holes.

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15 Surprising Facts About the War of the Currents: Edison vs. Tesla

War of the Currents

Edison vs Tesla and Westinghouse

Edison ran a campaign against alternating current, electrocuting animals and helping build the first electric chair. Tesla shocked himself on stage to prove AC was safe, Westinghouse lit the 1893 Chicago World's Fair, and Niagara Falls settled the battle. Edison later admitted sticking to DC was a mistake.

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Quiz: how much of that stuck?

7 questions, every answer is somewhere above.

Scientists and Inventors Who Changed the World 0 / 7

1. Which scientist is the only person to win Nobel Prizes in two different scientific fields?

2. What plants did Gregor Mendel grow to study heredity?

3. Who is credited with writing the first published computer algorithm?

4. Which pioneer created the world's first compiler?

5. Isaac Newton wrote over a million words on which secret pursuit?

6. Einstein's Nobel Prize in Physics was awarded for his work on what?

7. Whose telephone patent was filed just hours before a rival's?

Frequently asked

Who is the only person to win Nobel Prizes in two different sciences?

Marie Curie. She is the only laureate honored in two distinct scientific fields, physics and chemistry.

Did an apple really fall on Isaac Newton's head?

No. The falling apple story is a myth, and the apple never hit his head.

Who wrote the first computer program?

Ada Lovelace wrote the first published computer algorithm, in notes about Charles Babbage's machine that she published under the initials A.A.L.

Did Galileo invent the telescope?

No. He did not invent it, but he used one to show that the Moon is rough and cratered and to discover the moons of Jupiter.

Which scientists made major discoveries about the sky without a telescope?

Nicolaus Copernicus researched the cosmos entirely without a telescope, and Johannes Kepler discovered his laws of planetary motion without ever using one.

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