Police shut down marijuana operations run by Native American tribes. The Paiute Tribe of Las Vegas look to weed to avoid their extinction.

In the United Kingdom, Krishna Andavolu follows underground medical pot patients and providers as they dodge the law to deliver back-alley healthcare in a country that considers them criminals.

Even though medical pot is legal in Michigan, weed arrests increase and police raid mom and pop caregivers on minor technicalities in order to seize and sell their most valuable stuff.

Krishna meets believers in Colorado and Rhode Island who merge their reverence for a higher power with their love of smoking cannabis.

Marijuana legalization is putting more stoned drivers on the road; Krishna gets behind the wheel in Washington to find out how dangerous it is.

As marijuana legalization spreads, more moms-to-be are using pot to treat their pregnancy-related symptoms, but at what legal risk to the mother, and health risk to the fetus?

Marijuana legalization promises a new American success story, but with skyrocketing rents and thousands of people homeless on the streets of Denver, whose green dream is this?

Krishna investigates the case of 19-year-old Camille Browne who entered a state of psychosis after smoking a blunt and murdered a local pastor, claiming God told her to do it.

Multinational corporations are moving to Colombia to set up a global weed supply chain. But will Colombia's pot farmers, long under the thumb of FARC rebels, join in or fight back?

Krishna explores how the stigma around medical weed can have deadly consequences, following the story of a Maine man who was kicked off of an organ transplant list for using pot.

Krishna heads to DC and Amsterdam to see if partial pot legalization can work.

Krishna investigates how Bernard Noble's two joints led to 13 years in prison.

Krishna investigates black market dealers and growers in Atlanta and Oakland to discover why they have yet to break through into today's legitimate weed world.

The next big thing in medical marijuana might be cancer therapy. But with little hard evidence, families whose kids have cancer are taking matters into their own hands.

Krishna travels to Colorado, meeting families who've relocated to seek medical pot and starry-eyed ganjapreneurs trying to strike gold in America's Marijuana Mecca.

Krishna travels to Congo to meet the mbuti pygmies, female dealers and farmers in rebel territories who all smoke and sell weed as a way of eking out a living.

With gang violence and police brutality causing trauma across the country, Krishna heads to Compton to see if weed can help Americans suffering from urban PTSD.

Krishna meets Vets exploring and using weed to treat PTSD.

Can the booming business of marijuana become the first gender-equal industry? Krishna meets women working across the pot trade.

Krishna meets growers in CA whose farms are threatened by corporate interests.

While many NFL players treat pain from the game with weed, some believe weed may also protect against deadly brain injury, yet the league vehemently pushes against its use.

As mass deportations of "criminal aliens" loom, Krishna follows a Virginia family caught in the deportation dragnet to see how the War on Drugs has fueled Trump's War on Immigrants.

With autism on the rise and no cause or cure in sight, more parents are breaking federal laws by giving their kids weed to treat the disorder.

Krishna follows a shipment of weed from California to New York to find out if the legalization of marijuana has ushered in a golden age of dope smuggling.

In an unaccredited detox facility in the backwoods of Maine, former addicts try to get current addicts clean by smoking and eating massive amounts of weed.