In Hollywood, we've received messages from extraterrestrials many times. In Contact, a message from the stars started out as a mathematical sequence of prime numbers. In Arrival, a linguist and a ...

One of the most famous messages ever beamed to space was a string of 1,679 bits sent by the Arecibo radio telescope in 1974. But if E.T. sent us such a string, how could we Earthlings even begin to ...

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It’s that time of year again. Time for new Trapper Keepers, reams of lined paper, and bouquets of freshly-sharpened pencils. It’s also time for a little note-passing (at least for students who can’t ...