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Category: Life: Biology

DNews: What Does Bone Marrow Actually Do?

Bone marrow transplants are known to save lives, but how? What makes bone marrow so special?  

TED-Ed: What would happen if you didn’t sleep?

In the United States, it’s estimated that 30 percent of adults and 66 percent of adolescents are regularly sleep-deprived. This isn’t just a minor inconvenience: staying awake can cause serious bodily harm. Claudia Aguirre shows what happens to your body and brain when you skip sleep.  

Science Magazine: Most cones don’t really see color

We see color because of specialized light-sensing cells in our eyes called cones. One type, L-cones, sees the reds of strawberries and fire trucks; M-cones detect green leaves, and S-cones let us know the sky is blue. But vision scientists have now discovered that not all cones sense color  

TED Ed: How a single-celled organism almost wiped out life on Earth

There’s an organism that changed the world. It caused the first mass extinction in Earth’s history … and also paved the way for complex life. How? Anusuya Willis explains how cyanobacteria, simple organisms that don’t even have nuclei or any other organelles, wrote a pivotal chapter in the story of life on Earth.  

TED-Ed: Why do we hiccup?

The longest recorded case of hiccups lasted for 68 years … and was caused by a falling hog. While that level of severity is extremely uncommon, most of us are no stranger to an occasional case of the hiccups. But what causes these ‘hics’ in the first place? John Cameron takes us into the diaphragm …

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TED: This scientist makes ears out of apples | Andrew Pelling

Andrew Pelling is a biohacker, and nature is his hardware. His favorite materials are the simplest ones (and oftentimes he finds them in the garbage). Building on the cellulose structure that gives an apple its shape, he “grows” lifelike human ears, pioneering a process that might someday be used to repair body parts safely and …

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NikonMicroscopes: These Are the Best Microscopic Videos of 2015

Every year, Nikon’s Small World in Motion Competition rounds up the best microscopic videos from scientists across the world. The results are always strange, beautiful and oddly compelling. Watch them below.      

Nipam H. Patel: From Eggs to Tadpoles

This time lapse filmed by shows Nipam H. Patel frog eggs transforming into tadpoles in 30 seconds.  

TED Ed: How a wound heals itself?

Our skin is the largest organ in our bodies, with a surface area of about 20 square feet in adults. When we are cut or wounded, our skin begins to repair itself through a complex, well-coordinated process. Sarthak Sinha takes us past the epidermis and into the dermis to investigate this regenerative response. Lesson by …

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AMNH: Science Bulletins | Egg Patterns Identify Intruders

When cuckoos lay eggs in other birds’ nests, they produce eggs similar in color and pattern to the hosts’ own. With the help of a new computer program, scientists analyze egg patterns to see how certain details could help host birds detect an imposter.  

Anthony Atala: Printing a human kidney

Published on Mar 15, 2013 Surgeon Anthony Atala demonstrates an early-stage experiment that could someday solve the organ-donor problem: a 3D printer that uses living cells to output a transplantable kidney. Using similar technology, Dr. Atala’s young patient Luke Massella received an engineered bladder 10 years ago; we meet him onstage.