In Sweden, as across Europe, defense spending is soaring — but too slowly to meet Russia’s threat. STOCKHOLM — Europe’s race ...

For two millennia, mathematicians have shown the Pythagorean theorem to be true through geometry and algebra, never ...

The U.S. Centers for Disease Control and Prevention updated the numbers of measles cases in the country on Friday. Here's what they say and what it means for public health in the U.S.