A senior US official revealed what he described as new details about an alleged underground nuclear test that China conducted in June 2020, citing seismic data recorded in Central Asia, a claim ...

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 ...

Yarilet Perez is an experienced multimedia journalist and fact-checker with a Master of Science in Journalism. She has worked in multiple cities covering breaking news, politics, education, and more.

How LIFO and FIFO accounting methods impact a company's inventory outlook Carla Tardi is a technical editor and digital content producer with 25+ years of experience at top-tier investment banks and ...

Abstract: Press-pack IGBT devices have become the preferred power devices for GW-level VSC-HVDC systems due to their advantages such as high power density per unit volume, doublesided heat dissipation ...

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