Every time I write about particle physics, I encounter a moment of uncertainty about a quantity that, at first glance, ought to be clear. How many kinds of elementary particles should I say there are?

10:27 a.m. update: Interstate 30 has reopened. 7:55 a.m. update: The collision on U.S. Highway 75 has cleared, and all lanes have been reopened. I-30 lanes are still closed. Several collisions took ...

Three accidents have closed commuter-heavy roadways in the Dallas-Fort Worth area Friday morning. Here's what you need to know. A collision took place outside of Keller at State Highway 114 at ...

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New research explains how light can behave like a quantum fluid in semiconductors, opening up possibilities for new kinds of practical quantum light sources Photon condensation in semiconductor ...

Two collisions one after another on a major road in western Hungary has killed eight people, police said. A truck caught fire after colliding with a construction vehicle near the city of Győr at ...