When Spanish scholars translated the Arabic mathematical treatises, they lacked a letter for the “sh” sound and instead chose the “k” sound. They represented this sound by the Greek letter “χ,” which later became the Latin “x.”

If you are planning to use X (formerly Twitter), get ready to pay an annual subscription fee as the micro-blogging platform won't remain free anymore. X has said that it is going to charge users $1 as an annual fee under a new subscription model, Reuters reported.

Sure, X got a new name and CEO, Linda Yaccarino. But the platform seems to be fighting a thousand battles on a thousand fronts. We've seen an advertiser exodus due to owner Elon Musk's controversial moves, including sharing antisemitic content and unbanning Alex Jones. The company's valuation has plummeted.