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 ...

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 ...

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 ...

Two solid-value approaches, one well-built ETF. Our research team assigns Gold ratings to strategies that they have the most conviction will outperform their Morningstar Category average over a market ...

U.S. EPA. 2014. "Method 8270E (SW-846): Semivolatile Organic Compounds by Gas Chromatography/ Mass Spectrometry (GC/MS)," Washington, DC. EPA’s Selected Analytical Methods for Environmental ...

Antigen recognition by T cells through their highly diverse T cell receptors (TCRs) is central to adaptive immunity, and recent high‑throughput methods and databases have greatly expanded the ...