Positive marijuana tests push many drivers out of the industry, aggravating an existing recruiting and retention challenge. Education and messaging can help keep drivers up-to-date on DOT rules—but ...

Although marijuana is still a Schedule I substance and illegal under federal law, many states have legalized its use in recent years. A Pew Research Center analysis found that 54 percent of Americans ...

Elizabeth and Luke Mason, scientists who met during graduate studies at Colorado State University, saw cannabis legalization in 2012 as an opportunity. With backgrounds in biochemistry, microbiology, ...

GRANTS PASS, Ore. (AP) – Marijuana testing used to mean checking to see if someone had been smoking it. But with Oregon, Washington and Colorado all making pot more widely available to the public, ...

Arizona's marijuana-testing labs have decreased from 18 in early 2024 to 11 by mid-2025. Dispensary pressure to manipulate test results, financial difficulties and business disputes contributed to ...

OKLAHOMA CITY (KFOR) — A marijuana testing lab is offering a possible solution for Oklahomans worried about what is in the medical marijuana products they buy. News 4 told you last week that the state ...