Topic: human body

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How do wounds heal & how do scars form?

What happens when we get cut and bleed? How does skin scab over and heal? And why does skin scar? These two new vocabulary-filled TED-Eds from Sarthak Sinha get deep under our skin to give us a better understanding of...

Straightening teeth with dental braces: An 18 month time lapse

The impact of getting braces has never been as evident as in this 18 month orthodontic time lapse of an 11 year old girl and the alignment of her teeth. Ready... set... straighten! Today's Orthodontics: See what brace...

Animated Life: Seeing the Invisible

"Everything that you can actually see with your eye is just the smallest sliver of life on this Earth. Most of life is invisible..." And so begins the exquisite paper-puppetry of Seeing the Invisible, a video by F...

Sesame Street: Lupita Nyong’o Loves Her Skin

Ticklish, smooth, rough, elastic, protective, full of nerve endings to feel different textures and energies, and it comes in so many beautiful shades and colors... Elmo and his good friend Lupita Nyong’o talk about sk...

How the Sun Sees You: Revealing human skin in ultraviolet light

Artist Thomas Leveritt set up a ultraviolet camera and viewing monitor in Brooklyn's Prospect Park to show people what their skin looks like in ultraviolet light. This is "how the sun sees you." The revealed freckles ...

Summertime Science: Sunburn, Sweat, and Wrinkly Fingers

Why do we sweat? Why do our fingers wrinkle in water? Why do we get sunburns? Joe Hanson explains it all in this summer science episode of It's Okay to Be Smart. Bonus: find out what those SPF numbers mean on your sun...

ScienceTake: How an Embryo Grows

From a single cell to a whole organism, how do animals grow into such diverse and complex creatures from their embryonic beginnings? What if we could follow and map a human's development from a single cell to the esti...

It’s Okay to Be Smart – The Cycle: Carbon and Oxygen and You

From PBS Digital Studios and Joe Hanson of It's Okay to Be Smart, this is The Cycle: Carbon and Oxygen and You, a visualized explanation for what happens when we breathe. And here it is explained: via It's Oka...

Paralyzed Woman Controls Robotic Arm With Thoughts

When Cathy Hutchinson controlled a robotic arm using a small sensor planted in her brain, it was a remarkable breakthrough in neurobiology and computer science. The sensor would recognize patterns or signals from her ...

TED Ed: How does the heart pump blood?

"For most of history, humans had no idea what purpose the heart served... although everyone could feel their own heart beating, it wasn't always clear what each thump was achieving... Even in the 21st century, only a ...

Sugar: Hiding in plain sight

We know that sugar is a big part of candy, ice cream, and sweet drinks, but did you know that added sugars are included in 3/4 of the 600,000+ products found in the average grocery store? And...

TED Ed: The Mystery of Motion Sickness

One out of three people get motion sick, yet it’s not something we can really cure, only relieve. So what exactly is going on inside of our bodies when this happens? If you liked Head Sq...

Head Squeeze: Why do we get car sick?

Why do we get car sick? Sea sick? Air sick? Greg Foot of Head Squeeze explains. And here’s some related reading on ginger. Related videos: more brains! via Devour.

Ancient Ancestors Come to Life at the Smithsonian

"The human story is really nothing short of the story of a little corner of the universe becoming aware of itself." From National Geographic, paleo-artist John Gurche creates realistic huma...

Thailand’s Moken people have incredibly clear underwater vision

In this extraordinary adaptation strategy, Thailand’s Moken sea gypsies can see twice as clearly underwater by controlling the size of their pupils. What was generally considered an automatic reflex for the res...

Boy gets prosthetic hand made by 3-D printer

"When I outgrow a hand, we can easily make a new one," explains 12-year-old Leon McCarthy of his "cyborg" hand. His path into this specialized technology began when his father Paul found a video of 5-year-old Liam Dip...

Close Up: The Human Eye

This human eye video close-up, via io9’s Incredible Photographs of Fractals Found in the Natural World, was filmed by AJ Korkidakis. The one below, which isn’t as crisp but goes i...

Human tower-building competition: 2012 Concurs de Castells

From the 2012 Concurs de Castells, a human tower-building competition in Tarragona, Spain, watch this video by photographer David Oliete. David also took photos. A long tradition in the ...

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