Pueblo, Colo., had high hopes for a legal-marijuana boom; financial troubles now plague the industry.

Operators promise high-end treatment, help addicts sign up for insurance then pile on charges for little in return, say former patients and insurers.

Xylazine, an animal tranquilizer, is infiltrating the illicit drug supply in North Carolina and other states.

A drop in overdoses astounded public officials and health experts, who traveled across the country to learn the formula and replicate it.

After groves were ravaged for decades by a disease, new EPA-approved genetic technologies are giving citrus growers a chance to rebuild.