National security, unlocked. Each Thursday, host Mary Louise Kelly and a team of NPR correspondents discuss the biggest national security news of the week. With decades of reporting from battlefields ...

In this video, Ash Marlow explains a simple magic trick where a coin appears to vanish and then return. The method uses a small piece of double-sided tape placed on the back of the hand. By tossing ...

Waveguide-enhanced Raman spectroscopy utilizes electromagnetic enhancements at waveguide surfaces to improve Raman signal intensity. This Primer discusses laser selection, waveguide design, light ...

There are many approaches to pricing. These include cost-based, going-rate, target profit, cost-plus, and break-even approaches. When you think about it, all of these approaches to pricing a product ...