SciShow
We Don’t Know What the Sun Is Made Of
Unlike Earth, our Sun is a giant ball of mostly hydrogen and helium. Astronomers managed to figure that one out roughly 100 years ago. But after all this time, they still can't come to an agreement on what "mostly" means, precisely.
SciShow
The Future of the Search for Life
Astronomers have found more than 5,000 planets in the last three decades, but that’s not nearly as exciting as potentially coming across the first extraterrestrial creatures. And we may finally be in a position to make that discovery.
PBS
The Quasar from The Beginning of Time | STELLAR
Recently, the oldest quasar ever seen was discovered by the Gemini North telescope in Hawaii, the Magellan Telescopes at Las Campanas Observatory in Chile, as well as the Large Binocular Telescope in Arizona. In this first episode of the...
PBS
First Detection of Light from Behind a Black Hole
How do you see the unseeable - how do you explore the inescapable? Our cleverest astronomers have figured out ways to catch light that skims the very edge of black holes. Let’s find out what they learned. A few weeks ago a story made the...
PBS
How Do We Know What Stars Are Made Of?
Pin-pricks in the celestial sphere, through which shines the light of heaven? Or gods and heroes looking down from their constellations? Or lights kindled above middle earth by Varda Elbereth and brightened with the dew of the trees of...
TED-Ed
TED-Ed: What happens if you don't put your phone in airplane mode? | Lindsay DeMarchi
Right now, invisible signals are flying through the air all around you. Massive radio waves carry information between computers, GPS systems, cell phones, and more. And the sky is flooded with interference from routers, satellites, and,...
TED Talks
TED: Blindness isn't a tragic binary -- it's a rich spectrum | Andrew Leland
When does vision loss become blindness? Writer, audio producer and editor Andrew Leland explains how his gradual loss of vision revealed a paradoxical truth about blindness -- and shows why it might have implications for how all of us...
SciShow
Salmon Can Turn on Night Vision. Why Can’t We?
Most of us can only see certain wavelengths of light our entire lives. So why can salmon switch on night vision? We'll learn how they can reshape their eyes to see into the infrared.
SciShow
Cloudy With A Chance Of Aliens: How We Look for Extraterrestrial Life
What do astronomers look for when they study exoplanets for signs of alien life? Hank explains how space telescopes are already yielding tantalizing clues of what other worlds might hold -- including water! -- and how the next generation...
SciShow
Some Of You Can See The Invisible
We know that not everyone's vision is perfect, which is why some of us need glasses. But some people can also just see more stuff than others! From seeing UV and infrared light, to even having bonus color receptors in our eyes, there are...
SciShow
The Unexpected Connection Between Estrogen and Autism | SciShow News
There's a lot we don't understand about autism spectrum disorder, but this week scientists announced that they may have found a link between the disorder and elevated hormone levels.
SciShow
Why is Indigo in the Rainbow?
Indigo may be a very vague and unnecessary color, but it has an interesting history that involves some plants, turmoil, and Isaac Newton's interest in the number seven. Hosted by: Hank Green
TED Talks
TED: A colorful case for outside-the-box thinking on identity | Olivia Vinckier
Have you ever been forced to limit your identity to a single box on an application, survey or census questionnaire? For many, it is a futile and overall outdated exercise, especially for those with multiracial and multi-ethnic...
TED Talks
TED: Why autism is often missed in women and girls | Kate Kahle
Women and girls with autism spectrum disorder often don't display the behaviors people typically associate with neurodivergence, greatly impacting when, how -- and if -- they are diagnosed. Autism acceptance advocate Kate Kahle makes the...
PBS
Why is job opportunity still lagging for people with disabilities?
The unemployment rate for people with a disability is more than double than for those without. Even though the law bars such discrimination, it can be difficult for these Americans to get hired. But that's not the full story: Some...
SciShow
There's More Than One Bipolar Disorder
There are a number of stereotypes about bipolar disorder, but they stray pretty far from what the reality is—especially since there are multiple subtypes that all have their own sets of symptoms.
PBS
First Detection of Life
In 1990, an experiment conceived by Carl Sagan was performed using using the Galileo spacecraft. The purpose? To detect life on a planet based on measurements by a space probe. The experiment was successful, and abundant life was...
SciShow
Cloudy With A Chance Of Aliens: How We Look for Extraterrestrial Life
What do astronomers look for when they study exoplanets for signs of alien life? Hank explains how space telescopes are already yielding tantalizing clues of what other worlds might hold -- including water! -- and how the next generation...
SciShow
Antimatter Light Spectrum Discovered!
Scientists were able to measure the emission lines of antimatter! And we may have some new clues about how dinosaurs lost their teeth on the way to becoming birds.
SciShow
How to Kill a Galaxy
Our Milky Way galaxy is alive and well, producing new stars all the time. But there’s another group of galaxies out there, populated only by venerable red dwarf stars - the young stars are nowhere to be seen. In effect, these galaxies...
Crash Course
PC Gaming: Crash Course Games
Today, we're FINALLY going to talk about PC Gaming. So the personal computer is the precursor to the console, but it's not quite accurate to say that it just led to the console. PCs and the video games created on them have and continue...
TED Talks
TED: Tips for reclaiming your peace of mind online | Naomi Shimada
TED talks about tips for reclaiming your peace of mind online | Naomi Shimada
TED Talks
TED: How to make radical climate action the new normal | Al Gore
A net-zero future is possible, but first we need to flip a mental switch to truly understand that we can stop the climate crisis if we try, says Nobel laureate Al Gore. In this inspiring and essential talk, Gore shares examples of...
TED-Ed
TED-Ed: How quantum mechanics explains global warming - Lieven Scheire
You've probably heard that carbon dioxide is warming the Earth. But how exactly is it doing it? Lieven Scheire uses a rainbow, a light bulb and a bit of quantum physics to describe the science behind global warming.