Centripetal and centrifugal forces are central to circular motion, but they're not the same. Discover the differences between ...

As gangs in Haiti continue to expand the areas under their control and show no signs of holding back on terrorizing the ...

NPR's Scott Detrow talks with Robert A. Pape of the University of Chicago about what happens when democracies use military force to occupy their own territory. Weeks of talk of sending federal troops ...

The United States Armed Forces maintain distinct physical fitness standards across its service branches, reflecting each ...

President Trump has not committed to adding American forces to the mix in Ukraine. No one has detailed publicly what form defenses would take, but there are several options. By David E. Sanger ...

A federal judge ruled Tuesday that President Trump’s deployment of the National Guard in Los Angeles was illegal, which the sane and democracy-loving among us should applaud — though of course an ...