Background Annually, 4% of the global population undergoes non-cardiac surgery, with 30% of those patients having at least ...

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 ...

A. A mark is a given and known sign by which a thing can be distinguished from all others of its kind. Thus a trademark is used to distinguish the article bearing it from all imitations of the same ...