SciShow

Hank gives a quick run-down of the reasons scientists think the land mammals of today are nowhere near the size of the largest sauropods. Some of them might surprise you!

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Gluten is a sticky protein composite found in cereal grains. Hank gives us some insight into the importance of gluten in history, as well as its impact on health in our own time.

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Da Vinci imagined a helicopter powered solely by human muscles. Now more than 500 years later, two teams are using advanced materials to try and make that dream come true. Hank and Catilin discuss these two teams and the S...

Since the advent of genetic engineering, a lot of weird questions have cropped up, particularly with regard to what information a company can patent. Individual genes, as they are discovered, are now immediately patented a...

Hank noticed something mysterious in the park one day. Fairy rings: are they mystical portals to another realm? Or could there be another, more scientific, explanation?

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Hank brings you the tale of another weird place on earth - the Waitomo Caves of New Zealand, where glowworms emit bluish-green light in a beautiful display.

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What if instead of going to the store to buy a new toilet brush, all you had to do was walk into your office and print one out? With recent advances in 3D printing, such a scenario might not be as far away as you think.

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Hank has good news about NASA.

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Chromosomes are fascinating little things, and today, Hank explains why more of them doesn't mean more complex, and why different organisms have different numbers of chromosomes. The short answer: mistakes happen.

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Hank is joined by Peter Winkler with some news about sinkholes and DARPA's new robotic mule, and then the boys are joined by Jessi from Animal Wonders and her special friend "Fluffy" the Chilean rose hair tarantula.

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Ada Lovelace, Daughter of Lord Byron, was somehow the first author of a computer program...even though she lived more than a century before the first modern computer.

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The smaller members of the felid family can purr, but why? Hank takes on this most adorable of life's mysteries in todays episode of SciShow.

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Earth's orbit has a bit of a litter problem. Hank outlines a few ways scientists have thought of to help clean things up.

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Hank brings us a special report on the retro-proto-turbo-encabulator, which could very well revolutionize...uh...something­.

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Hank usually likes to keep science and politics separated, but the reality is that a lot of scientific research in the United States is funded by the government. This is a problem right now because the disfunction in the w...

Hank tells the story of the mysterious star known as "Methuseleh," and why scientists think that it is the oldest known star in the universe.

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Everybody knows what anxiety feels like - it's annoying and counterproductive and apparently useless, so why does it exist? It turns out your anxiety isn't useless at all - it's a result of the sympathetic nervous system (...

There are natural poisons that lurk in bacteria, plants, and fungi pretty much everywhere, and they're there for good reasons (according to the organisms that produce them) - but what is it about their chemical make up tha...

Viruses are among humanity's greatest threats and it seems like they're always one step ahead of us. But this week, biologists say that they've discovered a new weapon we can use against some of our most nefarious virus en...

In our continuing series on Earth's weirdest places, Hank describes the crazy place in Antarctica known as Blood Falls in all its scientifically strange majesty.

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In the world of chemistry, an "organic" compound is often described as anything with carbon in it, and "organic chemistry" is the study of carbon compounds, but there is actually no single definition of what "organic" mean...

Katherine is back with more information about cats and Jessi from Animal Wonders shares Gonzo the crimson-rumped toucanet.

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Today on SciShow news, dead person wisdom is helping enrich our understanding of the natural world - how did Vikings manage to be such awesome navigators? And is heart disease inherent in human beings? Scientists think mum...

It's pi day! Hank explains why this irrational number is important to scientists, and discusses a bit of a controversy that surrounds it.

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Earlier today, mission specialists with NASA's Mars Science Laboratory announced that they have found, for the first time, evidence of an ancient environment on Mars that could have sustained life. Hank tells us the speci...

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In a word, "yes" - space is packed with gravity. Hank explains how Isaac Newton described how gravity works, and why even though it seems that things are floating in space, they're still effected by gravity. Every object ...

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Evolution doesn't care about ethics - it cares about surviving and getting your alleles out there as much as possible. From that perspective, cannibalism can seem like a pretty good idea to some creatures. Hank introduces ...

Emily Graslie of the Brain Scoop is back again with some more skulls to stump Hank, and Jessi from Animal Wonders brings in Blueberry the blue-tongued skink.

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Hank sets the record straight for us, discussing a rain of spiders in Brazil (!?), a new virus that has the internet all a-twitter, and another asteroid recently found to have hit the Earth (not the one in Siberia!) - are ...

As spring approaches in the Northern Hemisphere, we anticipate the fluttering butterflies and the capering baby lambs, and we can also expect to see some birds hammered out of their minds in the trees, and perhaps on the g...

There are a lot of weird places on Earth and our new series will explore some of the weirdest. Today Hank takes us to Göreme National Park in Turkey so we can learn about this region's fascinating geological history and ab...

Featuring Michael Aranda (youtube.com/michaelaranda) and Kemosabe the prehensile-tailed porcupine.

In this episode, Michael attempts to stump Hank and then they meet Kemo and Jessi from Animal Wonders.

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Hank is back in the studio and is very excited to be able again to share news of the universe with you, including his encounter with a giant squid, an English king discovered under a parking lot, new pyramids discovered in...

Earlier today, a 15 meter wide meteor exploded over siberia with the force of several Hiroshima bombs. Over 1200 people were injured, mostly by flying glass. Here, Hank discusses what happenedt, what it means, and comparab...

The idea of putting blood into a person was a radical one when it was first attempted 350 years ago, but today, more than 15 million pints of blood are donated each year in the U.S. to be used in transfusions to over 5 mil...

Featuring Katherine Green, Content and Social Media Manager for SciShow and also Hank's wife, and Quigley, the brush-tailed bettong or woylie.

In this episode, Katherine shows Hank some cute wild cats, and then they mee...

Hank uses a favorite subject of the YouTube community - the potato gun - to teach us about the principles of pneumatics, which use the potential energy of compressed gas to do work in lots of useful machines every day.

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Today Emily Graslie of The Brain Scoop gives us the news about a couple of near- misses for our planet and an update on where astronomers think habitable life might be found in other star systems.

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At SciShow, we ask the tough questions. Today we explore the answer to the question "if identical twin brothers married identical twin sisters, would their offspring be identical?"

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Featuring Peter Winkler, our SciShow graphics guru, and Professor Claw, the emperor scorpion.

We decided it would be cool to have guests come into the studio and talk about science with Hank.

In this episode, Peter and H...