Extras

Video thumbnail: NOVA Will the Universe's Stars Someday Disappear?

NOVA

Will the Universe's Stars Someday Disappear?

The age of stars is not as enduring as it might seem.

Will the Universe's Stars Someday Disappear?

Video thumbnail: NOVA NOVA Universe Revealed: Age of Stars Preview

NOVA

NOVA Universe Revealed: Age of Stars Preview

Voyage to discover the sun’s place in a grand cycle of birth, death and renewal.

NOVA Universe Revealed: Age of Stars Preview

Video thumbnail: NOVA How a Star Dies in a Supernova

NOVA

How a Star Dies in a Supernova

The saying "live fast, die young" applies to stars, astrophysicist Grant Tremblay says.

How a Star Dies in a Supernova

Video thumbnail: NOVA Was Eating Insects Key to Human Brain Evolution?

NOVA

Was Eating Insects Key to Human Brain Evolution?

Insects may have provided humans' ancestors with key nutrients.

Was Eating Insects Key to Human Brain Evolution?

Video thumbnail: NOVA Insects Make Protein More Efficiently Than Mammals

NOVA

Insects Make Protein More Efficiently Than Mammals

Most of the calories insects eat can be converted into nutrients that we can then eat.

Insects Make Protein More Efficiently Than Mammals

Video thumbnail: NOVA Edible Insects Promo

NOVA

Edible Insects Promo

Take a tasty look at insect foods that could benefit our health and our warming planet.

Edible Insects Promo

Video thumbnail: NOVA This Detector Can Catch Cosmic Neutrinos

NOVA

This Detector Can Catch Cosmic Neutrinos

Neutrinos could help unlock one of the biggest mysteries in physics today.

This Detector Can Catch Cosmic Neutrinos

Video thumbnail: NOVA MOSAiC Scientists Measure Arctic Sea Ice Volume

NOVA

MOSAiC Scientists Measure Arctic Sea Ice Volume

Just how much ice is in the Arctic Ocean?

MOSAiC Scientists Measure Arctic Sea Ice Volume

Video thumbnail: NOVA The Arctic Jet Stream Affects Global Climate. Here's Why.

NOVA

The Arctic Jet Stream Affects Global Climate. Here's Why.

The jet stream is a band of wind that influences weather in the northern hemisphere.

The Arctic Jet Stream Affects Global Climate. Here's Why.

Video thumbnail: NOVA Arctic Drift Preview

NOVA

Arctic Drift Preview

Join scientists on a daring polar voyage to uncover the Arctic’s climate secrets.

Arctic Drift Preview

Video thumbnail: NOVA Particles Unknown Preview

NOVA

Particles Unknown Preview

Join the hunt for the universe’s most common—yet most elusive and baffling—particle.

Particles Unknown Preview

Video thumbnail: NOVA Why is Researching Cannabis so Hard?

NOVA

Why is Researching Cannabis so Hard?

Here's how approved research is conducted on cannabis.

Why is Researching Cannabis so Hard?

Video thumbnail: NOVA What is the Endocannabinoid System?

NOVA

What is the Endocannabinoid System?

Cannabinoid receptors, named after cannabis, are found in nearly every organ in the body.

What is the Endocannabinoid System?

Video thumbnail: NOVA A Veteran's Story of Medical Cannabis Use and Arrest

NOVA

A Veteran's Story of Medical Cannabis Use and Arrest

For Black people in America, the war on cannabis is still ongoing.

A Veteran's Story of Medical Cannabis Use and Arrest

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

NOVA

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

Many states have legalized cannabis for medical use, but thousands are still in prison.

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

Video thumbnail: NOVA How Some Parents Brought CBD to Market to Treat Epilepsy

NOVA

How Some Parents Brought CBD to Market to Treat Epilepsy

About a third of epilepsy patients don't respond to medication.

How Some Parents Brought CBD to Market to Treat Epilepsy

Video thumbnail: NOVA How Cannabis Affects Teens' Brains

NOVA

How Cannabis Affects Teens' Brains

Our natural endocannabinoids reach their highest levels as the brain develops.

How Cannabis Affects Teens' Brains

Video thumbnail: NOVA CBD Helps Anxiety Patients in a Clinical Trial

NOVA

CBD Helps Anxiety Patients in a Clinical Trial

Unlike THC, CBD is not psychoactive and not known to be intoxicating.

CBD Helps Anxiety Patients in a Clinical Trial

Video thumbnail: NOVA Cannabis Reverses Brain Aging in Mice

NOVA

Cannabis Reverses Brain Aging in Mice

Low doses of THC from cannabis can help older mice learn faster, researchers found.

Cannabis Reverses Brain Aging in Mice

Video thumbnail: NOVA The Cannabis Question Preview

NOVA

The Cannabis Question Preview

As state-legalized cannabis spreads, NOVA explores its little-known risks and benefits.

The Cannabis Question Preview

Video thumbnail: NOVA Why are Bats Tolerant of the Diseases They Carry?

NOVA

Why are Bats Tolerant of the Diseases They Carry?

Viruses circulate so well within bat colonies — could they hold secrets to better health?

Why are Bats Tolerant of the Diseases They Carry?

Video thumbnail: NOVA Unique Adaptations may Explain Bats' Resistance to Viruses

NOVA

Unique Adaptations may Explain Bats' Resistance to Viruses

Bats are really effective at dumping heat to keep their body temperatures fairly normal.

Unique Adaptations may Explain Bats' Resistance to Viruses

Video thumbnail: NOVA Bat Superpowers Preview

NOVA

Bat Superpowers Preview

Could the source of the deadliest viruses hold the secret to a healthier and longer life?

Bat Superpowers Preview

Video thumbnail: NOVA Ship That Changed the World Preview

NOVA

Ship That Changed the World Preview

As we excavate a 500-year-old wreck, learn the secrets behind history’s great ships.

Ship That Changed the World Preview