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 ...

Jim Mueller, CFA, began his career as a scientist. He has five years of experience as a senior analyst and another four years as a research analyst. David Kindness is a Certified Public Accountant ...

Characterization and analytical techniques are methods used to identify, isolate or quantify chemicals or materials, or to characterize their physical properties. They include microscopy, light or ...