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How do our eyes and brains work together?

How does an eye work? How do our brains try to interpret the information our eyes send them? And is seeing really believing? This episode of National Geographic's Decoder explains how our eyes and brains work together...

How do roller coasters affect your body?

In 1895, crowds flooded Coney Island to see America’s first-ever looping coaster: the Flip Flap Railway. But its thrilling flip caused cases of severe whiplash, neck injury and even ejections. Today, coasters can pull...

Animals with night vision

Nocturnal animals have special abilities that help them survive and flourish in the dark. One of these abilities is night vision. This NatGeoWILD video introduces us to a handful of animals with eyesight that's specia...

Where Do Teeth Come From?

How long teeth can last? 30,000 years? 200,000 years? 300 million years? In this episode of It's Okay to Be Smart, Joe Hanson gets an up-close look at some ancient saber-toothed tiger (smilodon), mastodon, tyrannosaur...

How does sound travel to our brains?

How does a sound, like music played on a trumpet, travel from the source through our ears and to our brains? This animated video from the National Institute on Deafness and Other Communication Disorders describes the ...

Flamingos swim with stingrays in their hydrotherapy session

When flamingos need some exercise and pain relief for arthritic knees, hydrotherapy—swimming in a pool for physical therapy—can do the trick. Columbus Zoo and Aquarium zookeepers take Martini and excited flamingo budd...

Okuda San Miguel paints a colorful 23-story mural in Toronto

Okuda San Miguel works up high on a swing stage scaffold, the same kind of suspended platform that window washers use. The internationally renowned Spanish street artist sprays sharp edges of bright color fields. They...

iCub, IIT’s teleoperated robot toddler

iCub is a toddler-sized open-source robot by the Dynamic Interaction Control Lab at the Istituto Italiano di Tecnologia (IIT). See the iCub robot walk across the lab and interact with a toy in the September 2018 video...

A giant panda gives birth to twin baby pandas (and doesn’t realize she’s raising both)

Vets wake up in the middle of the night at Chengdu Research Base of Giant Panda Breeding in Sichuan province. Pregnant panda Li Li is about to give birth, and the vets are there to assist and witness the moment. When ...

Gazing into the eyes of SEER: The Simulative Emotional Expression Robot

This young looking face with light eyes, expressive eyebrows, and a Mona Lisa smile is named SEER, an acronym for Simulative Emotional Expression Robot. It was created by Japanese artist Takayuki Todo to explore the p...

Herman Brown is Feeling Down

"Herman's quiet world is suddenly interrupted by something loud and stressful." What is that noise? What is that feeling? Is it as big as it seems or are things not quite that bad? Herman Brown is Feeling Down is a...

The World in UV

See The World in Ultraviolet, a similar but strange view compared to what our human eyes perceive in the visible spectrum. In this Veritasium video, Derek Muller explores how the ultraviolet makes eyeglasses, flowers,...

Gokurōsama

It's morning time and the Japanese supermall is preparing to open for business. Two women in a food shop are getting ready, too, until the older woman's back goes out. How will her young assistant help her visit the c...

It’s Okay to Fart: What are farts made of and why are they funny?

Farts can be giggle-worthy and gross, but every person on Earth farts, as well as lots of animals... so why don't we know more about them? Even people throughout history have wrestled with what farts are and how they ...

The Science of Hearing

The ability to recognize sounds and identify their location is possible thanks to the auditory system. That’s comprised of two main parts: the ear, and the brain. The ear’s task is to convert sound energy into neural ...

Kids Meet a Person With Cerebral Palsy

While Cerebral Palsy (pronounced seh-ree-brel pawl-zee) is a blanket term commonly referred to as “CP” and described by loss or impairment of motor function, Cerebral Palsy is actually caused by brain damage. The brai...

Camels vs. Cactus: Eating a prickly pear cactus with 6-inch needles

There's something about the prickly pear cactus that these camels like. And they like it enough to brave the six-inch needles on the pads or cladodes. Watch them eat in this video from Camel and Friends, a YouTube cha...

What is dust made of?

Less than a tenth the size of an ant, a dust mite’s whole world is contained in the dusty film under a bed or in a forgotten corner. This realm is right under our noses, but from our perspective, the tiny specks of br...

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