Top FBI official Chuck Rosenberg appointed as new DEA chief

Update: Push for DEA chief to resign over his medical marijuana remarks

In his black-and-white assessment of medical cannabis, DEA chief Chuck Rosenberg also contradicted one of the most important and thorough evaluations of marijuana’s medical applications — an exhaustive analysis published in the Journal of the American Medical Association in June.

Deep dive: Why Colorado has struggled to regulate pot pesticides

State regulators have known since 2012 that marijuana was grown with potentially dangerous pesticides, but pressure from the industry and lack of guidance from federal authorities delayed their efforts to enact regulations, and they ultimately landed on a less restrictive approach than originally envisioned.

Pot industry reacts to Denver's new scope on pesticides

Pot industry reacts to new Denver scope on pesticide checks

The marijuana industry has reacted to the city of Denver’s recent expansion of its pesticide inspections protocol by double-checking its labels and, in one case, destroying more than $8,000 worth of infused edibles and oils.

Denver lifts hold on marijuana products after testing for pesticides

Denver marijuana products pass pesticide test; hold lifted

Denver health officials Wednesday lifted a day-old order to hold hundreds of marijuana-infused lozenges and raw marijuana from two businesses after lab tests showed no trace of an unapproved pesticide listed among their ingredients.

Denver lifts hold on marijuana products after testing for pesticides

Denver cracks down on pesticide use in pot products

Denver health officials Tuesday began inspecting and quarantining hundreds of marijuana products because their labels listed pesticides not approved for use on cannabis.

Study finds cannabis compound CBD can help heal bones

There’s yet another use for marijuana: It may help to heal broken bones, according to a new study. Researchers found that cannabidiol — an element of marijuana that does not get people high — improved the healing process in rats with broken leg bones after eight weeks.