As avid puzzlers know full well, the humble jigsaw puzzle is a thing of beauty in multiple ways. Not only are jigsaws an absorbing time sink, but multiple studies have demonstrated they are good for ...

Although there are many functions in the base package of R, sometimes there may not be a function that does exactly what you want. In this case, R allows users to create their own functions and call ...

Ukraine's President Volodymyr Zelensky met senior U.S. army figures in Kyiv on Thursday, after reports that Washington D.C. had presented a plan to Ukraine to end the war with Russia that would be ...