If you've ever been pulled over by a law enforcement officer in Kentucky and asked to submit to a breath or field sobriety test, whether you'd been drinking or not, you may be wondering if you're ...

With each breath, humans exhale more than 1,000 distinct molecules, producing a unique chemical fingerprint or "breathprint" rich with clues about what's going on inside the body. For decades, ...

Weed got legal faster across the United States than traffic cops could keep up with. With no analog to the alcohol breathalyzer test available, cops have either had to guess, with legal dubiousness, ...

Few people who have undergone nasopharyngeal swabs for coronavirus testing would describe it as a pleasant experience. The procedure involves sticking a long swab up the nose to collect a sample from ...