How 4/20 became a pot holiday - and call to action

Some claimed 420 referred to a police code for marijuana possession or that it arose from Bob Dylan’s “Rainy Day Women No. 12 & 35," with its refrain of “Everybody must get stoned" — 420 being the product of 12 times 35.

Washington shuts down pot businesses due to old pesticide

Cannabis regulators have halted operations at several outdoor pot farms and processing facilities on a stretch of former fruit orchards in north-central Washington state after testing found high levels of chemicals related to a dangerous pesticide used decades ago.