A Chinese satellite demonstrated the world’s first intercontinental quantum communication. It was a video conference that used entangled photons. In the race for quantum computing, China is way ahead in transmission speed.
Between the Sheets — Excel podcast episode 31: Excel’s secret DATEDIF function
A quick and simple way of finding the number of days, months or years between two dates is Excel’s secret DATEDIF function. When you type it in a worksheet, there’s no popup syntax help to indicate the function exists.