Trump doubled down on his use of the derogatory insult while talking to reporters aboard Air Force One on Sunday, Nov. 30 Pete Marovich/Getty; Jacek Boczarski/Anadolu Donald Trump said 'I think ...

National security, unlocked. Each Thursday, host Mary Louise Kelly and a team of NPR correspondents discuss the biggest national security news of the week. With decades of reporting from battlefields ...

So many productivity methods ask you to prioritize your daily tasks by considering how much time or effort they'll require, then tackling the resource-heavy ones first. For some people, that's a solid ...

The travelling salesman problem (TSP) remains one of the most challenging NP‐hard problems in combinatorial optimisation, with significant implications for logistics, network design and route planning ...