Add Yahoo as a preferred source to see more of our stories on Google. A device that can detect the chemical in cannabis responsible for its psychoactive effects could work as an early prototype for a ...

We explore the chemistry behind how a little machine can tell how much alcohol you've had. We explore the chemistry behind how a little machine can tell how much alcohol you've had. Reactions is ...

Using a breathalyzer alone to effectively detect cannabis impairment could be a pipe dream, according to a recent pilot study spearheaded by the University of Colorado. A valuable tool over the past ...

A Breathalyzer designed to determine whether someone is currently under the influence of cannabis is being used by employers in Michigan and is now offered at several medical centers around the state.

For decades, police have used breathalyzers to test for alcohol, but they don’t have a reliable tool to measure marijuana use. That could change soon. Researchers are working to develop a breathalyzer ...

A new breathalyzer is now available that works with smartphones and mobile apps. Breathometer ($49.99) is small enough to fit on a keychain and plugs into the audio jack of a smartphone. Along with a ...

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A device that can detect the chemical in cannabis responsible for its psychoactive effects could work as an early prototype for a breathalyzer-type tool to test for marijuana, according to a recent ...