Topic: health

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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 glow-in-the-dark jellyfish inspired a scientific revolution

In science, ideas are kind of like seeds. If you're lucky, a seed will grow and expand the boundaries of human knowledge. But it's hard to know which seeds will take root. Take any invention or modern innovation and i...

How A Children’s Toy Led To An Essential Medical Device

"We were out in a primary health center talking to health care workers [in Uganda] and we found a centrifuge used as a doorstop because there's no electricity." The workers said that they really needed a powerful cent...

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...

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...

Why Not Now? Vivian Stancil

When Vivian Stancil was 49 years old, her doctor told her that she needed to immediately improve her health. Despite being afraid of the water—she's legally blind and had never been in a pool before—she was determined...

Vampire Bats: Bloodthirsty … and Cuddly – Skunk Bear

In this Skunk Bear episode, Adam Cole travels to 'bat paradise' (also known as the country of Panama) to meet with May Dixon and Dr. Gerry Carter of the Smithsonian Tropical Research Institute. There he gets a close l...

Thousands Of Sharks Visit A Seamount

In the Pacific, a tiny island 300 miles away from the shore hides a giant mountain beneath the waves that forms a home for thousands of plankton feeding fish. These fish attract Tuna, and the Tuna attract thousands of...

The toy-inspired Paperfuge, an innovative new tool in healthcare

Bioengineer and Stanford researcher Manu Prakash has developed another inexpensive scientific device. The Paperfuge is a hand-spun, ultra low-cost, paper and string centrifuge that was inspired by the ancient whirligi...

Why are we so attached to our things? – TED Ed

After witnessing the “violent rage” shown by babies whenever deprived of an item they considered their own, Jean Piaget – a founding father of child psychology – observed something profound about human nature: Our sen...

The Snail-Smashing, Fish-Spearing, Eye-Popping Mantis Shrimp

The mantis shrimp is a fascinating creature. One kind impales prey with a spear-like appendage and another smashes prey with a built-in club — the fastest attack in the animal kingdom. "At 30 times faster than the bli...

Toothpaste – Ingredients With George Zaidan

Cultures throughout history have tried a variety of things to clean their teeth... Egyptians and Babylonians brushed with twigs around 3500-3000 BC. In 5000 BC, a recipe of ox hooves, eggshells, myrrh, and pumice woul...

What causes cavities?

When a team of archeologists recently came across some 15,000-year-old human remains, they made an interesting discovery: the teeth of those ancient humans were riddled with holes. So what causes cavities, and how can...

3D printing ‘hyperelastic bone’ to mend injuries

Hyperelastic bone may be a 3D-printed solution for helping to mend our bones in the future. Cost-effective and customizable, the material is both a "structural element and a scaffold for bone regeneration," as shown i...

Evolutionary branching in action: Bacteria adapt to antibiotics

Watch E. coli bacteria encounter increasing strengths of antibiotics, the medicine that we use to fight infections or infectious diseases. A team led by Harvard Medical School's Michael Baym set up the video demonstra...

The Importance of Staring Out Of The Window

Staring out the window is often associated with a lack of attention or productivity, but in this film from The School of Life, we examine the activity (or lack of activity) as a highly productive pursuit that we might...

Why do some people have seasonal allergies?

If you've ever experienced watery eyes, sneezing, runny nose, itchy throat, and other allergic reactions during springtime, or you haven't but you know someone who has, this beautifully animated TED Ed by Eleanor Nels...

A hippo gets his teeth brushed

At the Tennoji Zoo in Osaka, Japan, hippo hygiene is important. Thanks to training and consistent routines, hippopotamus Tetsuo understands how to get his teeth brushed (and get a quick physical check-up) from the car...

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