video Watch how 19th-century Genaille-Lucas calculating rulers work Andrea James

Kids Math theorem: the most misshapen ham sandwich can always be cut into two perfect halves Andrea James

video Watch a mathematician explore non-euclidian geometry with a VR headset Andrea James

Science Why does a crumpled paper balloon inflate when batted around? Andrea James

math Hypnotic illusion gifs show the beauty of math Andrea James

happy mutants A Hundred Billion Trillion Stars: a child's garden of infinity Cory Doctorow

art This algorithmic generative art explores the visual beauty of math Andrea James

happy mutants Puzzles that teach the fundamentals of crypto's essential, elusive zero-knowledge proofs Cory Doctorow

video Numberphile looks at mathematics' undecidable statements Andrea James

books Kickstarting a CC-licensed picture book that teaches mathematical functions to small kids Cory Doctorow

video Trippy fractal of classical architecture set to classical music Andrea James

Kids How much would a star destroyer cost? Andrea James

math How many lentils does one Spotify play buy you? Mark Frauenfelder

Kids Mathematical conjecture generates beautiful lifelike form Andrea James

Space Turns out Star Trek redshirts are not likeliest to die Andrea James

math Different ways to prove that .999… = 1 Mark Frauenfelder

Science The mathematics of how sperm swim David Pescovitz

video Is mathematics invented or discovered? Andrea James

math How long would it take a pay-it-forward chain to reach 7.4 billion people? Mark Frauenfelder

math The moving sofa math problem: still unsolved 50 years later Andrea James