Interleaving the pages of two phone books makes them very difficult to separate (as shown on "Mythbusters" et al.). There wasn’t a quantitative explanation for this phenomenon until 2015.

Most people think of data transfer as instantaneous, but there is a hard physical limit of course – the speed of light. Grace Hopper used an 11.8-inch wire to communicate this "nanosecond" constraint loud and clear. If you're interested in the details, I’ve put together a breakdown of the math explaining why computers inevitably had…

Back to Article List Observers and imagers live for comets. Here are the top 20 from the past quarter-century. Comet 2006 P1 (McNaught) was a truly spectacular sight throughout the Southern Hemisphere. This image, taken from the European Southern Observatory’s Paranal Observatory in Chile in January 2007, shows the comet and a crescent Moon over…

Water accumulates in the steeps between them, so I think that might help they get bigger. But how do they form exactly? submitted by /u/Arth-the-pilgrim [comments]

submitted by /u/ANeomorph [comments]

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The longfin squid that ends up on your plate as calamari may have been caught in Rhode Island, but it’s likely traveled to China and back again for processing before being served. That example is illustrative of what’s known as the “seafood deficit,” a roughly $20 billion trade deficit due to the U.S. importing 80%…