Abstract: The Age of Information (AoI) is a key metric in monitoring and control applications of Internet of Things (IoT) networks, where real-time decision-making relies on the freshness of the ...

A coded passage in “Kryptos,” Jim Sanborn’s sculpture at CIA headquarters, has gone unsolved for decades. After he announced its auction, two researchers stumbled on the answer.

I do not believe in cheating. Traditionally, the term “ braindump ” referred to someone taking an exam, memorizing the questions, and sharing them online for others to use. That practice is unethical ...

The two leaders reached an agreement on fentanyl, some tariffs and rare earths, at least for a year. But even as the global trade picture cleared a little, Mr. Trump spurred new worries about nuclear ...