JD Vance was sworn in as vice president.(Julia Demaree Nikhinson-Pool via Imagn Images) Usha Vance held the Holy Bible.(Chip Somodevilla/Pool via AP) The inauguration's guest list included foreign ...

Donald and Melania Trump arrive at the White House ahead of the inauguration ceremony on Monday in Washington, D.C. (Andrew Harnik/Getty Images) Donald Trump was sworn in as the 47th president of ...

Donald Trump is now the 47th president of the United States, as well as the 45th president, a businessman - and a man who knows how to put on a show. Former presidents, Trump family members, tech ...

An optical spectroscopic technique, surface-enhanced Raman spectroscopy (SERS), mostly used in the research setting for liquid sample analysis, has recently been applied to breath-based diagnostics.