Superradiant Smith-Purcell radiation (S-SPR) is a kind of free electron radiation with a train of free electron bunches ...

A funeral limo en route to a funeral — and carrying a family to the funeral — was struck by a train on Thursday in Tennessee.

Lexington gears up for the 250th anniversary of its historic battle with reenactments, events, and a visit from filmmaker Ken Burns, previewing his new documentary.

Exporters at China’s largest trade fair spoke on Wednesday of stalled shipments and lower sales forecasts due to the ongoing trade war with the United States.