Category: Quantum Stuff

For thousands of years, if you wanted to send a secret message, there was basically one way to do it. You’d scramble the message using a special rule, known only to you and your intended audience. This rule acted like the key to a lock. If you had the key, you could unscramble the message;… Continue reading How Public Key Cryptography Really Works

November 15, 2024 4 min read Ending NASA’s Chandra Will Cut Us Out of the High-Resolution X-Ray Universe The Chandra X-ray Observatory is facing closure. Shutting it down would be a loss to science as a whole By María Arias NASA’s Chandra X-ray Observatory as it may appear at about 50,000 miles from Earth, nearly… Continue reading Ending NASA’s Chandra Will Cut Us Out of the High-Resolution X-Ray Universe

November 15, 2024 3 min read Miaou! Curly Tails Give Cats an ‘Accent’ A genetic mutation makes some cats’ tail curl over their back, giving them something akin to an accent when they communicate with other kitties By Christa Lesté-Lasserre Baby the cat has a genetic mutation that makes his tail curl over his back… Continue reading Miaou! Curly Tails Give Cats an ‘Accent’

David Bessis was drawn to mathematics for the same reason that many people are driven away: He didn’t understand how it worked. Unlike other creative processes, like making music, which can be heard, or painting pictures, which can be seen, math is for the most part an internal process, hidden from view. “It sounded a… Continue reading Mathematical Thinking Isn’t What You Think It Is

Do you think teeth are boring or gross? From the iron-laden teeth of Komodo dragons to the horns on unicorns of the sea, the animal kingdom is filled with marvelous dental adaptations that will have you thinking again. Sharks are covered in toothlike scales called denticles Colored micrograph of shark skin showing the complex three-dimensional… Continue reading 10 Jaw-Dropping Facts about Teeth in the Animal KingdomThe Tooth Is Stranger Than Fiction

A half-century ago humanity sent its first postcard to the stars, carried by a narrow beam of radio waves. It was November 16, 1974—a turbulent time on planet Earth. The cold war was reaching its crescendo, and the world economy was still sputtering from a Middle East oil embargo that was imposed the previous year.… Continue reading The Arecibo Message, Earth’s First Interstellar Transmission, Turns 50

Stingrays Move Thousands of Tons of Sand on the Seafloor per Year In search of snacks, stingrays’ feeding technique supports ecosystems by rearranging the underwater geography By Jeanne Timmons Drone imagery of a fever of estuary stingrays feeding in seagrass meadows. With their winglike fins undulating in slow motion, stingrays and other rays seem to… Continue reading Stingrays Move Thousands of Tons of Sand on the Seafloor per Year

Scientists routinely build quantitative models — of, say, the weather or an epidemic — and then use them to make predictions, which they can then test against the real thing. This work can reveal how well we understand complex phenomena, and also dictate where research should go next. In recent years, the remarkable successes of… Continue reading How Is AI Changing the Science of Prediction?

Paris Olympics Will Be a Training Ground for AI-Powered Mass Surveillance In the run-up to the Paris 2024 Olympics, the French government has authorized wide-reaching use of AI software in security surveillance feeds By Anne Toomey McKenna & The Conversation US It won’t be just human eyes monitoring the thousands of security cameras at the… Continue reading Paris Olympics Will Be a Training Ground for AI-Powered Mass Surveillance