Testing for cotinine can usually tell whether you smoke or vape versus whether you have had indirect exposure. How long it stays in your system depends on how you ingest the nicotine and how often.

Dozens more USAID staff ousted as Trump administration dismantles aid agency 4 mistakes to stop making on a plane, according to an etiquette coach NFL fines two Eagles players, including key ...

See the 10 stocks » If you're wondering what comes next for Aehr Test Systems, read on for a look at bull and bear cases presented by two Fool.com contributors. Bull: Long-term growth trumps near ...

The Royal Navy has been monitoring a Russian spy ship after it was spotted around UK waters earlier this week, the defence secretary has told MPs. John Healey said the vessel, Yantar, was used for ...

A Royal Navy attack submarine surfaced close to a Russian spy ship off the UK coast in an extraordinary warning to stop spying on British undersea cables, the defence secretary has revealed.

Did you know solving picture puzzles can reveal your hidden intelligence traits? Picture puzzles are a great mental workout that sharpens focus and enhances problem-solving skills. Individuals ...

British Defense Secretary John Healey told Parliament on Wednesday the Royal Navy was tracking a "Russian spy ship" that passed through U.K. waters, warning Russia's President Vladimir Putin ...

"It's very clear that the Russian economy is definitely not as strong as Putin wants us to believe," Svantesson said. She said that Moscow's inflation was "much higher than the public figure says." ...