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 ...

President Trump’s Executive Order on rescheduling marijuana caps a year of major cannabis law changes. Learn how employers ...

High levels of THC -- the compound in marijuana that causes a "high" -- may affect how eggs develop and could lead to fertility problems, miscarriages and chromosome issues in embryos, new research ...