SciShow Kids
How Eyes Let Us See The World | SciShow Kids
New ReviewSqueaks is heading on a trip around the world! He's going to see so much, and wants Jessi to experience those sights, too. In this episode, he learns about how humans (and a couple of other animal guests) see.
Bozeman Science
Investigations
New ReviewIn this video Paul Andersen shows you how to plan and carry out investigations in a mini-lesson on Investigations. Two examples are included in the video and two additional examples are included in the linked thinking slides.
PBS
What New Science Would We Discover with a Moon Telescope?
New ReviewIn order to see the faint light from objects in deepest space, astronomers go to the darkest places on the planet. In order to listen to their quite radio signals, they head as far from any radio-noisy humans as possible. But there’s...
PBS
What Supernova Distance Would Trigger Mass Extinction?
New ReviewThe deaths of massive stars results in one of the most beautiful and violent events in the universe: the supernova. But if these explosions occur too close to Earth their radiation can impact life and even trigger mass extinctions.
PBS
Did JWST Solve The Mystery of Supermassive Black Hole Origins?
New ReviewThis is what we astronomers call a blob, or a smudge, if you want to get really technical. It may not look like much from here, but what do you expect for something near the literal edge of the observable universe. If you were there when...
PBS
Was the Gravitational Wave Background Finally Discovered?
New ReviewA few weeks ago a large team of gravitational wave astronomers announced something pretty wild. The moderately confident detection of pervasive ripples in the fabric of space time that presumably fills the cosmos, detected by watching...
Be Smart
Measuring the Universe With a 14-Billion Light-Year Ruler
New ReviewSince the time of the ancient Greeks, scientists have been constructing a cosmic measuring tape to measure the universe from our own backyard all the way to its ever-expanding edge: the cosmic distance ladder. In this video, we climb...
SciShow
We Turned the Mediterranean Into One Big Particle Physics Experiment
New ReviewIn order to study the smallest particles in the known universe, physicists have to build incredibly huge detectors. One of them, currently under construction, stretches across the Mediterranean from France to Greece. And despite being...
SciShow
11 Things That Can Change Your Eye Color
New ReviewYou can dye your hair, you can get a tan, but the color of your eyes is pretty much set in stone - or is it? From weird diseases to temper flare-ups and even iris implants, here are just a few ways that your eye color might not be so...
SciShow
The Real Reason the Sky is Blue
New ReviewIf someone (say, a small child) asks you why the sky is blue, you might dive into an explanation of Rayleigh scattering. But if you want to give them a way cooler explanation, you can tell them it's because of bacteria. Hosted by: Stefan...
SciShow
The Closest Black Hole Isn't as Far as You'd Like
New ReviewWhere is the closest black hole to Earth? Well, they're pretty hard to find, so the record-holder keeps getting updated. Currently, it's an unassuming black hole called Gaia BH1. But research has hinted at several black holes that might...
SciShow
Medicine Cabinets Shouldn't Exist
New ReviewThe conditions in many medicine cabinets turn out to be detrimental for medicines—some worse than others. Hosted by: Hank Green (he/him)
SciShow
How NASA Gave Us a Better Mattress
New ReviewNASA scientists are said to have invented a lot of household items over the decades. Some, like Velcro, or Tang, or the first cordless power tools, are misattributions. But other claims are totally legit. And you probably own at least...
SciShow
The Most Important Explosion in History
New ReviewNot long after the supernova of 1604, the telescope was invented. But astronomers would have to wait nearly FOUR CENTURIES to witness the next supernova that was visible to the naked eye. It was 1987, and a blue supergiant in the Large...
SciShow
The Top 10 Space Pictures of 2024 (and What They Mean)
New ReviewLet's say goodbye to 2024 by highlighting some amazing space images that were released this year. They aren't just pretty — astronomers can actually study them to learn more about the universe! Hosted by: Niba Audrey @NotesbyNiba (she/her)
SciShow
The Hunt for the Blackest Black
New ReviewA decade after Vantablack took the internet by storm, where are we in terms of the blackest black? It turns out Vantablack doesn't hold the record, anymore. So what have scientists done differently? Hosted by: Savannah Geary (they/them)
SciShow
How Science Solved The Mysteries of The Dead Sea Scrolls (and 3 Other Ancient Texts)
New ReviewSometimes, an ancient document is lost to history. Sometimes, you find it covered in mold and written over by an ancient scribe. Fortunately, thanks to science, lost doesn't quite mean what it used to. Hosted by: Stefan Chin (he/him)
SciShow
NFL Teams Are Trying to Win More Games with Lights
New ReviewThe idea of improving athletic performance with a certain kind of lighting sounds absurd, but some NFL and MLB teams are trying it. The question is: does it work? Hosted by: Savannah Geary (they/them)
SciShow
Why Things Look That Way Under a Blacklight
New ReviewFluorescence isn't just a cool effect that turns your white T-shirt neon purple under a black light. Its discovery opened our eyes to a whole new field of science and engineering. And it's all thanks to a crystal called fluorite. Hosted...
SciShow
This Giant Space Flower Could Help Us Find A New Earth
New ReviewOver the past three decades, astronomers have discovered thousands of planets beyond our solar system. But while some of them might be the right size and mass to be some kind of Earth 2.0, we don't know if any of them is truly...
SciShow
The REAL Reason You Can't Sleep After Surgery
New ReviewThe idea of improving athletic performance with a certain kind of lighting sounds absurd, but some NFL and MLB teams are trying it. The question is: does it work? Hosted by: Niba Audrey @NotesbyNiba (she/her)
SciShow
The Brightest Object in the Universe is a Black Hole
New ReviewIn 2024, astronomers announced they'd discovered the brightest (or, technically, the most luminous) object in the known universe. And it's a cosmic engine powered by the hungriest black hole in the known universe. Hosted by: Stefan Chin...
SciShow
Are Energy-Efficient Windows Bad For Us?
New ReviewLow-E windows have reduced the amount of energy required to heat and cool our buildings, a critical step in fighting climate change. But new research suggests we've lost something beneficial in the process. Hosted by: Hank Green (he/him)
Crash Course
Microscopes: How We See What We Can't See: Crash Course Biology #22
New ReviewThere’s an immense world of tiny stuff within us and around us—but how do we know about it? In this episode of Crash Course Biology, we’ll discover how we see what we can’t see, thanks to the help of centuries-old tools and more recent...