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How Deep Can Caves Get?

AdultsNatureWorld
Krubera Cave, one of our planet’s deepest known caves, extends 2200 meters into the earth – that’s a depth of nearly six Empire State Buildings.

Can Humanity Stop A Planet-Killing Asteroid?

AdultsAstronomyScienceSpace
Some killer asteroids were found only days before flyby. If they had struck Earth, the power of thousands of nuclear bombs would have flattened cities and killed millions.

Star Personalities

YouthScienceSpaceYouth 110...
In this episode, Sabrina chats about their difference and tells us what those differences mean.

I Am

KidsBooksEmotionKids 110...
There are many ways to feel—and those feelings make us behave in silly, thoughtful, worried, frustrated, and angry ways.

Dance Mode

ChildrenDanceECEE1...
Who likes to dance?! Get ready to move about with Bluey and Bingo in this very special animated music video for Dance Mode.

Phone Cameras

YouthPhotographyTechnologyYouth 120...
Rachel Yang shares a snapshot of how digital cameras work.

Remembering Jane Goodall

KidsInspirationAnimalsBiology...
Remembering Dame Jane Goodall, the legendary conservationist who changed how we see chimpanzees and inspired millions worldwide.

What Are the Four Seasons?

ChildrenSeasonsEducationEE1...
In this science lesson, students will learn all about the four seasons — spring, summer, fall, and winter.

Chris Hemsworth Reveals his Toughest Challenges | Limitless: Live Better Now | National Geographic

AdultsEntertainmentHealthLifestyle...
In this exclusive interview, Chris Hemsworth returns to discuss the highly anticipated new season of his documentary series, Limitless: Live Better Now.

Perfect Pumpkin Recipes | How To Use Pumpkin In Your Cooking

AdultsCookingFood
Jamie and Gennaro show you how to use pumpkin and squash in your own cooking!

Complete & Simple Predicates

YouthEducationGrammarWriting...
Let's take a deep dive into complete and simple predicates.

How To Make Alum Crystals

KidsChemistryExperimentsHow-to...
Today we are going to learn how to make crystals with alum powder!

The Word "How"

ChildrenECEducationLanguage...
Learn the sight word "how".

The Wonder of Weightlifting | Jaime Seeman | TED

AdultsHealthHumorScience...
With humor and hard science, obstetrician and gynecologist Jaime Seeman reveals why building muscle is one of the best ways to combat women’s top health risks.

Minerals, Crystals, & Gems

YouthEducationGeologyNature...
What’s the difference between minerals, crystals, rocks, and gems? In this lesson students will learn what these substances are and how they naturally form.

Are Asteroids Dangerous?

KidsAstronomyKids 125Kids 130...
A sample of Bennu could tell us exactly how threatening this near-Earth asteroid is, and how we defend ourselves against it.

Stars, Constellations, and More

ChildrenAstronomyEE1EE2...
By the end of this science lesson, students will be able to describe the characteristics of stars and constellations.

If you had the chance to be immortal, would you take it?

AdultsEthicsPhilosophyPsychology...
Explore different philosophers’ ideas on immortality and dig into their theories about the positives and negatives of eternal life.

Why Grass Grows Better Under Trampolines

AdultsEnvironmentGardeningNature...
If you’ve ever owned a backyard trampoline –or jumped on someone else’s– you might have noticed that the grass underneath it is longer and lusher than the grass in the rest of the yard. It’s not just that that grass isn’t getting mowed… in fact, when it does get mowed, you can see the weird effect even better! Instead there's something else –something shadier– going on here.

Sloth Claws

YouthAnimalsFactsNature...
The sleepy sloth has a surprising secret... their claws are actually their bones protruding from their limbs!

Glowing Turmeric Experiment

KidsBiologyExperimentsKids 110...
Today we are going to learn about one very special fluorescent spice with my glowing jellyfish experiment.