A massive wastewater spill from an old gold mine in southwestern Colorado prompted state officials to expand the list of downstream users they warn after such accidents.
State health officials on Wednesday announced that there have been 11 human cases of of tularemia in Colorado since May of this year.
Tired of Cheech & Chong pot jokes and ominous anti-drug campaigns, the marijuana industry and activists are starting an ad blitz in Colorado aimed at promoting moderation and the safe consumption of pot.
The Colorado Department of Public Health and Environment says a Garfield County resident has the first confirmed case of hantavirus in the state this year.
Colorado health authorities on Tuesday revived an attempt to crack down on medical marijuana caregivers.
A federal team has arrived in Colorado to help investigate hospital reports that synthetic marijuana is to blame for scores of recent illnesses and possibly three fatalities in Denver and Colorado Springs.
Suncor Energy says the spill of oily material flowing into Sand Creek has been contained.
Health officials have issued a warning for cantaloupes from a revered melon-producing area of Colorado amid a bacteria outbreak.