SciShow
How Do You Date a Star?
Figuring out the age of a blinking speck in the sky is a difficult feat, especially if considering how many types of stars there are. This is where a Hertzsprung-Russell meets a gyrochronologist.
PBS
How Blood Evolved (Many Times)
Blood is one of the most revolutionary features in our evolutionary history. Over hundreds of millions of years, the way in which blood does its job has changed over and over again. As a result, we animals have our familiar red blood....
SciShow
Why So Many Ladybugs Don't Look Like Ladybugs
Ladybugs are red with black spots, right? Well, not always. There's a lot of genetic and evolutionary reasons that they can be different colors with wacky patterns.
SciShow
Do Those Glasses Really Fix Colorblindness?
You've seen those viral videos of colorblind people putting on special glasses and reacting to colors they've never seen before! Today, we'll explore how colorblindness works and what those glasses try to do to fix it! Hosted by: Hank Green
SciShow
The Science of a Selfie
Taking photos used to require technical knowledge and time in a lab, but now we have electronic devices in our pockets that do all of the work for us. How do these miracle devices do it? Hosted by: Olivia Gordon
SciShow
Don't Eat the Watermelon Snow!
You know, it's probably best to just not put snow in your mouth regardless of color. Hosted by: Olivia Gordon ----------
SciShow
Could Eye Drops Replace Your Glasses?
Getting older means it’s likely that your eyes will have trouble focusing on things at close distances, so we are often prescribed glasses to combat this problem. But what if there were eye drops that could achieve the same results?
SciShow
The Secrets Underneath Jupiter's Atmosphere
We’ve probed some 250 kilometers into Jupiter’s atmosphere, and that’s raised some new questions about the mysterious planet. And we’ve taken another important step in looking for life on Mars by using a common chemistry process for the...
SciShow
Can Dogs See Color?
Quick Questions dispels the myth that dogs can only see in black and white.
SciShow
SciShow Quiz Show: With the Brain Scoop's Emily Graslie!
Hank goes head-to-head with the Brain Scoop’s Emily Graslie to match wits about springs, hoaxes, and human evolution!
SciShow
What Color is Your Blood?
What color is your blood. Red, right? Well, actually, yes. So why does it look blue when you see it through your skin? And is everyone's blood always the same color red (spoiler: no)? Do all animals have red blood ('nother spoiler: no!)?...
SciShow
The First-Ever Map of Mars’s Interior
We’ve done a surprising amount of exploration on Mars, from its atmosphere, to its surface, and miles deep into its canyons. But mapping its insides has been a quandary that we hadn’t been able to solve until last week!
SciShow
The Two Asteroids That Shouldn’t Be There
Space Clue: 203 Pompeja and 269 Justitia in the asteroid belt with evidence of being formed outside of it. But the real mystery is how they got there! And we again return to Ganymede with new evidence suggesting even more kinds of water...
Crash Course
Nebulae
Astronomers study a lot of gorgeous things, but nebulae might be the most breathtakingly beautiful of them all. Nebulae are clouds of gas and dust in space. They can glow on their own or reflect light from nearby stars. When they glow...
SciShow
Eclipses That Don't Eclipse
Here on Earth, we’re used to seeing both lunar and solar eclipses. But further out are eclipses that don’t behave at all the way we expected them to.
SciShow
Can Plants Get Sunburned?
Plants need sunlight to live, but they also need to block the sun's more harmful rays. Plants can't put on sunscreen or find shade, so how do they avoid getting a gnarly sunburn?
SciShow
Why Is My Pee Green?
How worried should you be when your urine isn't yellow, but instead it's green, red, or even black?
SciShow
Great Minds: James Clerk Maxwell, Electromagnetic Hero
Saturn’s rings, colored photography, and the discovery of electromagnetic waves all have have one thing in common. James Clerk Maxwell. Discover for yourself all the amazing contributions Maxwell made to science.
Crash Course
Old & Odd: Archaea, Bacteria & Protists - CrashCourse Biology
Hank veers away from human anatomy to teach us about the (mostly) single-celled organisms that make up two of the three taxonomic domains of life, and one of the four kingdoms: Archaea, Bacteria, and Protists. They are by far the most...
Curated Video
Myoglobin
A protein found in muscle tissue that performs a similar role to haemoglobin in the blood, as a carrier of oxygen that releases it to cells when required A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using...
Curated Video
Deoxygenated
A substance that has had oxygen removed from it in some way. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce...
Curated Video
Chlorophyll
A green pigment found in all plants and algae, that enables energy from sunlight to be converted to chemical energy through the process of photosynthesis. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds...
Curated Video
Factpack: Redshift
Discover how different wavelengths allow scientists to measure the distance to the stars. Physics - Universe - Learning Points. A Twig FactPack Film. Open a discussion on what has been already learnt in a topic, or use to grab attention...
Curated Video
Earthly Treasures: Precious Gemstones
Discover the specific conditions needed for the formation of emeralds, rubies and sapphires; and how there is now potential to 'grow' them in laboratories. Earth Science - Geology - Learning Points. Emeralds are made from beryllium....