What is the Endocannabinoid System?

THC, the psychoactive component of cannabis, binds to receptors in and outside of the brain, causing cells to behave differently. Cannabinoid receptors, named after cannabis, are found in nearly every organ of the human body.

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Clip Season 48 Episode 11 Length 03:49 Premiere: 09/29/21

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Season 48 Episodes

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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

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Incarcerated for Cannabis: Who's Still in Prison and Why?

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Lingering Symptoms from COVID-19 are “Unprecedented”

Clip Length 05:05 Premiere Date 02/04/21

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Clip Length 07:15 Premiere Date 02/04/21

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Clip Length 06:53 Premiere Date 01/15/21

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Top

What is the Endocannabinoid System?

Recent Episodes

Stone Age Temple Mystery

Mammal Origins

Can Dogs Talk?

Angkor: Hidden Jungle Empire

Asteroids: Spark of Life?

Operation Space Station: Science and Survival

Sponsored by:

Clips & Previews

The Cannabis Question Preview

What is the Endocannabinoid System?

A Veteran's Story of Medical Cannabis Use and Arrest

How Some Parents Brought CBD to Market to Treat Epilepsy

How Cannabis Affects Teens' Brains

Incarcerated for Cannabis: Who's Still in Prison and Why?

Cannabis Reverses Brain Aging in Mice

CBD Helps Anxiety Patients in a Clinical Trial

Why is Researching Cannabis so Hard?

Why Misinformation Matters

Lingering Symptoms from COVID-19 are “Unprecedented”

New COVID-19 Variants Spread More Easily

This University Monitors COVID-19 Through Saliva Testing

Specials

Interview: Discovering Dark Energy and the Hubble Tension with Nobel Prize Winner Adam Riess

Interview: Evolution of New Species, Venom, Wings, and More with Sean B. Carroll

Interview: De-Extinction, Dire Wolves, and Jurassic Park with Beth Shapiro

Particles of Thought: The Extremophile’s Guide to Life

Interview: The Animal Translator with Erich Jarvis

Interview: Brain Guru with Heather Berlin

Interview: Bob and Mike’s Big Idea with Bob Hazen and Mike Wong

Interview: Black Hole Badass with Janna Levin

Interview: The Deepfake Detective with Hany Farid

Interview: Mind of a Fossil Hunter with Kirk Johnson

When Machines Prescribe

Sands of Time

Keepers of the Coastline

Tides of Tradition

Standing the Heat

Megadroughts and Indigenous Voices

Harvesting the Future

Sea Change: Survival in the Gulf of Maine

Sea Change: Peril in the Gulf of Maine

Sea Change: Bounty in the Gulf of Maine

When Whales Could Walk (Español)

Ancient Builders of the Amazon (Español)

Ancient Maya Metropolis (Español)

Picture a Scientist (with Audio Description)

Treasures Metals Eiffel Tower

A Labyrinth of Lava

From Mud to Rock

Finding Stromatolites

Stromatolites Were Kings

Ancient Life

Millions of Years Captured in Chalk

A Fourteen-Foot Fish From Kansas

Hell Creek Formation

No Dinosaurs Above the Line

Mammal Survivors

Dinosaur Fossils

King of Gore

Driving Dinosaur Diversity

Pangea

Making Granite From Volcanic Rock

A Massive Volcanic Eruption

Rock Time Capsules

The Sandstone Top of the Canyon

Fossil-Filled Limestone

The Grand Canyon's Oldest Rocks

From Lava to Land

Semi-Precious Pebbles

Five Steps of Volcanic Rock

Tearing North America Apart

Fossilized Sand Dunes

Volcanoes of Sand

Rockies 2.0

Manhattan Schist

Manhattan Skyline

New York's Mountains

Mendenhall Glacier