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The Cannabis Question

As state-legalized cannabis spreads, NOVA investigates the latest scientific evidence for its potential benefits and risks, and how criminalization has disproportionately harmed communities of color.
Season 48 Episode 11 Length 53:36 Premiere: 09/29/21

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Specials

Season 48 Episodes

Ancient Maya Metropolis
S48 E22 Length 53:31 Premiere Date 01/26/22

Alaskan Dinosaurs
S48 E21 Length 53:32 Premiere Date 01/19/22

Butterfly Blueprints
S48 E20 Length 53:31 Premiere Date 01/12/22

NOVA Universe Revealed: Big Bang
S48 E19 Length 53:16 Premiere Date 11/24/21

NOVA Universe Revealed: Black Holes
S48 E18 Length 53:16 Premiere Date 11/17/21

NOVA Universe Revealed: Alien Worlds
S48 E17 Length 53:17 Premiere Date 11/10/21

NOVA Universe Revealed: Milky Way
S48 E16 Length 53:17 Premiere Date 11/03/21

NOVA Universe Revealed: Age of Stars
S48 E15 Length 53:17 Premiere Date 10/27/21

Edible Insects
S48 E14 Length 53:28 Premiere Date 10/20/21

Arctic Drift
S48 E13 Length 53:32 Premiere Date 10/13/21

Particles Unknown
S48 E12 Length 53:28 Premiere Date 10/06/21

The Cannabis Question
S48 E11 Length 53:36 Premiere Date 09/29/21

Bat Superpowers
S48 E10 Length 53:23 Premiere Date 09/15/21

Ship That Changed the World
S48 E9 Length 53:12 Premiere Date 06/02/21

High-Risk High-Rise
S48 E8 Length 53:00 Premiere Date 01/05/22

Great Electric Airplane Race
S48 E7 Length 53:07 Premiere Date 05/26/21

Hindenburg: The New Evidence
S48 E6 Length 53:13 Premiere Date 05/19/21

Fighting for Fertility
S48 E5 Length 53:06 Premiere Date 05/12/21

Reef Rescue
S48 E4 Length 53:21 Premiere Date 04/21/21

Picture a Scientist
S48 E3 Length 1:33:06 Premiere Date 04/14/21

Looking for Life on Mars
S48 E2 Length 53:46 Premiere Date 02/24/21

Secrets in our DNA
S48 E1 Length 53:26 Premiere Date 01/13/21

The Cannabis Question Preview
Preview Length 00:30 Premiere Date 09/29/21

What is the Endocannabinoid System?
Clip Length 03:49 Premiere Date 09/29/21

A Veteran's Story of Medical Cannabis Use and Arrest
Clip Length 05:34 Premiere Date 09/29/21

How Some Parents Brought CBD to Market to Treat Epilepsy
Clip Length 07:01 Premiere Date 09/29/21

How Cannabis Affects Teens' Brains
Clip Length 03:28 Premiere Date 09/29/21

Incarcerated for Cannabis: Who's Still in Prison and Why?
Clip Length 03:54 Premiere Date 09/29/21

Cannabis Reverses Brain Aging in Mice
Clip Length 03:51 Premiere Date 09/29/21

CBD Helps Anxiety Patients in a Clinical Trial
Clip Length 03:04 Premiere Date 09/29/21

Why is Researching Cannabis so Hard?
Clip Length 03:39 Premiere Date 09/29/21

This University Monitors COVID-19 Through Saliva Testing
Clip Length 06:53 Premiere Date 01/15/21

Lingering Symptoms from COVID-19 are “Unprecedented”
Clip Length 05:05 Premiere Date 02/04/21

New COVID-19 Variants Spread More Easily
Clip Length 07:15 Premiere Date 02/04/21

Why Misinformation Matters
Clip Length 02:41 Premiere Date 02/11/21

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Kilauea: Hawaii on Fire

Premiered On: 01/23/2019

Journey to Hawai'i's Kilauea volcano, which sent rivers of lava through communities and into the sea when it erupted in 2018. Join a group of scientists and locals investigating the spike in volcano activity that turned paradise into an inferno.

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Ancient Maya Metropolis

NOVA investigates why the ancient Maya abandoned the magnificent cities they had lived in for centuries.

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Einstein's Quantum Riddle

Premiered On: 01/09/2019

Physicists capture light from across the universe in a bid to prove Einstein's quantum entanglement.

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Arctic Sinkholes

Scientists investigate colossal explosions in Siberia and other evidence that rapidly melting soil in the Arctic is releasing vast amounts of methane, a potent greenhouse gas.

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Weathering the Future

As extreme weather in the U.S. impacts more people - with longer heat waves, more intense rainstorms, megafires, and droughts - discover how Americans are fighting back by marshaling ancient wisdom and innovating new solutions.

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Edible Insects

Premiered On: 10/20/2021

From crunchy cricket chips to nutty black soldier fly grubs, explore the insect food industry and how it could benefit our health and our warming planet.

  • Thursday April 20, 2023 5:00 pm ET on KET
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Kilauea: Hawaii on Fire - S46 E3

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Dog Tales - S47 E2

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Cat Tales - S47 E3

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Picture a Scientist - S48 E3

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New Eye on the Universe - S50 E4

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Ancient Builders of the Amazon - S50 E3

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