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 ...

Alexandra Twin has 15+ years of experience as an editor and writer, covering financial news for public and private companies. Thomas J. Brock is a CFA and CPA with more than 20 years of experience in ...

This category includes test methods which have not yet been subject to the Federal rulemaking process. Each of these methods, as well as the available technical documentation supporting them, have ...

Statistical methods are mathematical formulas, models, and techniques that are used in statistical analysis of raw research data. The application of statistical methods extracts information from ...

On September 14, 2026, EPA published a Request for Information seeking public input on updates to test methods and waste sampling guidance under the Resource Conservation and Recovery Act.

Studying the brain mechanisms of natural behaviors is experimentally challenging. We developed a miniaturized, wireless platform to record and manipulate neural and physiological activity in small ...