The world is changing in big ways every day. State of the World from NPR takes you where the news is happening — and explains why it matters. With bureaus spanning the globe, NPR reporters bring ...

The Wyoming woman who shot her four daughters then herself Monday suffered from depression and other struggles, her husband told Cowboy State Daily on Wednesday. He said his wife's break has been both ...

Free body diagrams do not need to be drawn to scale but it can sometimes be useful if they are. It is important to label each arrow to show the magnitude of the force it represents. The type of ...