In a packed Riverhead courtroom, a highly emotional hearing saw the victims' families, one after another, confront their ...

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 ...

Scientific method is a body of techniques for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge. It is based on gathering observable, empirical and ...

Polyphonic ringtones should not be mistaken with the so called "True tones" (also known as "Real tones") which are simply audio recordings, typically in a common format such as MP3, AAC, or WMA.