A guided-missile destroyer at sea doesn’t need a missile to show it is ready. In a Navy-run drill, a bright beam came off the ...

The state Department of Agriculture released the following reports of inspections of restaurants and school cafeterias in Lackawanna, Luzerne and Schuylkill counties conducted between Feb. 15 and ...

For years, mathematical content on the web has been made accessible through MathML. In contrast, math in PDF files was typically reduced to unstructured alternative text—insufficient for braille math ...