The letter ‘x’ was first used to represent a kiss in 1763.
If you sign letters—or more likely, texts and emails—to those you love with an “xo,” then you’re keeping up a sweet tradition that goes back hundreds of years. Per an article in The Washington Post, the Oxford English Dictionary says that an “x” was first used to represent a kiss back in 1763 in a letter written by British naturalist Gilbert White.
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You wouldn’t be able to tolerate the quietest place on Earth for more than 45 minutes. Silence may be golden, but too much of it will drive you mad. In Minnesota’s Orfield Laboratories, there’s an anechoic chamber that is so quiet, the background noise is measured in negative decibels (-9.4 dBA, to be exact). The...
Dogs typically go to the bathroom in alignment with the north-south axis. We’ve known for a while that dogs, along with several other animals, can detect Earth’s magnetic fields. But it turns out, they also use it to direct their more personal habits. After watching 70 dogs do their business over a two-year period, researchers...