Here are 2025's most popular questions and answers from The Journal's Car Doctor column, from rotating tires to oil changes.

Tucson-area optics firm Geost has been supplying sensor systems for U.S. defense and intelligence satellites since its founding by a University of Arizona optics Ph.D. two decades ago. Now, Geost is ...

Administering an exam used to be straightforward: All a college professor needed was an open room and a stack of blue books. At many American universities, this is no longer true. Professors now ...

A research paper proposes a fully physically realized model for warp drive. This builds on an existing model that requires negative energy—an impossibility. The new model is exciting, but warp speed ...

Accelerate your tech game Paid Content How the New Space Race Will Drive Innovation How the metaverse will change the future of work and society Managing the ...