Back to Show
PBS News Hour
How safe is super-concentrated marijuana?
Now legal in eight states, there are unanswered questions about the impact of recreational marijuana on public health. To maximize potency, pot can be purified for maximum THC, its psychoactive ingredient. But a lack of research and restrictions on these very high concentrations is raising concerns. Special correspondent John Ferrugia of Rocky Mountain PBS reports.
Support Provided By

57:46
October 7, 2025 - PBS News Hour full episode

56:45
October 6, 2025 - PBS News Hour full episode

26:45
October 5, 2025 - PBS News Weekend full episode

26:45
October 4, 2025 - PBS News Weekend full episode

57:46
October 3, 2025 - PBS News Hour full episode

57:46
October 2, 2025 - PBS News Hour full episode

57:46
October 1, 2025 - PBS News Hour full episode

57:46
September 30, 2025 - PBS News Hour full episode

57:46
September 29, 2025 - PBS News Hour full episode

26:45
September 28, 2025 - PBS News Weekend full episode

26:45
September 27, 2025 - PBS News Weekend full episode

57:46
September 26, 2025 - PBS News Hour full episode