A South Korean researcher who solved the “moving sofa problem,” a mathematical puzzle that had remained unsolved for nearly ...

James is 58 years old. He's built up about $1.5 million in retirement accounts and still has a modest mortgage on his home.

Overview: Small R projects help turn theory into clear and practical data understandingReal-world datasets make learning R ...

At senior official levels, one sometimes gets into positions where choices become difficult because they could violate one’s ...