Topic: body

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How your digestive system works

Across the planet, humans eat on average between 1 and 2.7 kilograms of food a day, and every last scrap makes its way through the digestive system. Comprised of ten organs covering nine meters, this is one of the mos...

How the Animal Kingdom Sleeps & How Animals See the World – Animalism

Sleep is universal in the animal kingdom, but each species slumbers in a different — and often mysterious — way. Some animals snooze with half their brain, while others only sleep for two hours a day (without even suf...

How does your body know you’re full?

Hunger claws at your belly. It tugs at your intestines, which begin to writhe, aching to be fed. Being hungry generates a powerful and often unpleasant physical sensation that’s almost impossible to ignore. After you’...

A LEGO lawn mower man endlessly cuts the grass

A LEGO man mows his LEGO lawn, endlessly pushing a LEGO lawn mower. This kinetic sculpture was created by Jason Allemann, aka JK Brickworks, and can be powered by hand crank or motor. The illusion of grass-cutting...

Fred Harwin hand paints highly detailed prosthetic eyes

Portland, Oregon-based ocularist Fred Harwin makes beautifully detailed artificial eyes, an occupation that requires both medical and illustrative expertise. In this video from Oregon Public Broadcasting, Harwin share...

Sculpting Freddie Mercury

Canada-based Brazilian sculptor and teacher Juliana Lepine sculpts human likenesses with polymer clay. In the video above, she recreates Freddie Mercury, the lead vocalist of British rock band Queen, laying the clay o...

What does the wheelchair symbol actually mean?

Some of the world’s most recognizable symbols exist to sell products. Others, to steer traffic or advance political causes. But there’s one whose main purpose is to help people. You may know it as the wheelchair symbo...

How I made a lil “Wacky Waving Inflatable Arm Flailing Tube Man”

It's fun to see those attention-getting inflatable tube men that are wildly waving their arms in front of stores, car dealers, and even as scarecrows in farm fields. How fun would it be to have one dancing on your des...

Hummingbirds fly, shake, and drink in slow motion

First shared in the National Geographic feature A Mesmerizing Look at Hummingbirds in Flight, this high-speed video footage by Anand Varma captures these "perfect flying machines" as they fly, shake, and drink. The sl...

A Few Things to Know About American Sign Language

What might people who use American Sign Language (ASL) want people who don't use it to better understand? DT Bruno, Kallissa Bailey, Ardavan Guity, Leyland Lyken, and Felicia Williams answer that question in this vide...

How do baby flamingos become pink?

Watch as downy gray flamingo chicks are fed bright red milk, a sort of crop milk made from either parents' upper digestive tracts. As the chicks grow, they develop their signature pink feathers, as well as adult bills...

You’re A Firework (Scientifically Speaking)

"You have more in common with a firework than you might think. The same process that powers those explosions is going on inside a grill when you cook a hot dog, and inside your body when you eat that hot dog." Sku...

The giant tap dancing noses of Shostakovich’s ‘The Nose’

Giant tap dancing noses... an entire row of them! First performed in 1929, this fantastical troupe is from Dmitry Shostakovich's The Nose. The production above is by The Royal Opera from the autumn of 2016: Shostak...

MetaLimbs: Extra robot arms that you control with your feet

What if you were given two extra robot arms to use? Could you open a closed door when your hands are full? Could you paint or build something faster or more efficiently? Might you become a master juggler? This Inami H...

Dancing Professionally With Cerebral Palsy

When doctors diagnosed Jerron Herman with cerebral palsy hemiplegia, they told him he wouldn't be able to clothe or feed himself, and that he would need assistance with nearly everything he did. Not only did Herman pr...

How to change anxiety into excitement

Starting at a new school, performing in a recital, riding a rollercoaster, playing against a tough team, taking a test... there can be so many times when we might feel worry, anxiety, and stress about a task or experi...

The three different ways mammals give birth

All mammals share certain characteristics, like warm blood and backbones. But despite their similarities, these creatures also have many biological differences — and one of the most remarkable differences is how they ...

Why peregrine falcons are the fastest animals on earth

Peregrine falcons are the fastest animals of the land—and it's no wonder, their bodies are built for speed. While cheetahs can run up to 70 mph on land, peregrine falcons can dive at speed of over 200 mph. That's fast...

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