The Guardian
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Can you solve Martin Gardner’s best mathematical puzzles?
The maestro of recreational maths was born 100 years ago today. Here we celebrate his birthday with eight of his most celebrated puzzles
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First act of sexual intercourse ‘was done sideways, square-dance style’
Fossils of 380m-year-old lake-dwelling placoderms point to bony, L-shaped male organ and female ‘cheese-grater’ genitals, scientists say
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Jean Golding: a tale of illness, adventure and statistics
Ada Lovelace Day, a day to celebrate female role models in science, technology, engineering and maths (the STEM subjects). Last year, Ada LovelaceDay produced an ebook, for which I wrote […]
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Supersized dinosaurs divided up their dinner
The giant sauropod dinosaurs like Diplodocus and Apatosaurus are familiar thanks to their huge sizes and unique body shapes of a long neck and tail with a tiny head perched […]
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Lightbulb moment for Nobel physicists: prize awarded for inventing blue LEDs
One laureate paid just $200 for invention that allows energy-efficient lighting and could save quarter of world’s electricity