PBS
Loop Quantum Gravity Explained
The holy grail of physics is to connect our understanding of the tiny scales of atoms and subatomic particles with that of the vast scales of planets, galaxies, and the entire universe. To connect quantum physics with Einstein’s general...
PBS
Could We Terraform Mars?
We already have the technology to bring humans safely to Mars and set up small settlements - or at least could do within a generation. But those settlements will need to be cocooned - shielded against the deadly cold, intense radiation,...
PBS
Did Time Start at the Big Bang?
Our universe started with the big bang. But only for the right definition of “our universe”. And of “started” for that matter. In fact, probably the Big Bang is nothing like what you were taught. A hundred years ago we discovered the...
PBS
The Quantum Experiment that Broke Reality | Space Time | PBS Digital Studios
The double slit experiment radically changed the way we understand reality. Find out what the ramifications of this experiment were and how we can use it to better comprehend our universe.
PBS
How the Quantum Eraser Rewrites the Past | Space Time | PBS Digital Studios
Causality is meant to move in one direction: forward. But the Quantum Eraser experiment seems to reverse causality. How and why can this happen and what are the implications of this experiment on how we understand Quantum Mechanics and...
PBS
The Real Science of the EHT Black Hole
So, how do you take a picture of a black hole? The beast in question is the supermassive black hole in the center of this – the M87 elliptical galaxy. It has an estimated mass of several billion times that of the Sun, which gives it an...
PBS
The Cosmic Dark Ages
In astronomy we study things that are very far away. It’s a powerful challenge because even the brightest objects are almost impossibly faint when you view them from the other side of the universe. But there’s an up side. If the light...
PBS
The Alchemy of Neutron Star Collisions
Carl Sagan’s famous words: “We are star stuff” refers to a mind-blowing idea – that most atomic nuclei in our bodies were created in the nuclear furnace and the explosive deaths of stars that lived in the ancient universe. In recent...
PBS
Why Quantum Computing Requires Quantum Cryptography
Quantum computing is cool, but you know what would be extra awesome - a quantum internet. In fact if we want the first we’ll need the latter. And the first step to the quantum internet is quantum cryptography.
PBS
Is Pluto a Planet?
You know what a planet is, right? A big round thing that orbits a star. Uh, not so fast. The surprisingly vicious debate over the planetary status of Pluto has given us a fascinating glimpse into what a scientific definition really is....
PBS
What Happened Before the Big Bang?
We actually have a pretty good idea of what might have happened before the Big Bang. That is, as long as we define the Big Bang as the extremely hot, dense, rapidly expanding universe that is described by Einstein’s equations. That...
PBS
The Quantum Internet
When we finally have a quantum internet you’ll be able to simultaneously like and dislike this video. But we don’t. So I hope you like it. The world is widely regarded as being well and truly into the digital age, also called the...
PBS
No Dark Matter = Proof of Dark Matter?
We’ve been failing to detect dark matter for decades. Finally, the latest failure to detect dark matter may have actually proved its existence. One of these is true: either most of the matter in the universe is invisible and formed of...
TED Talks
TED: What's it like to be a giant sequoia tree? | Ersin Han Ersin
Artist Ersin Han Ersin invites us to step inside a giant sequoia tree, peering through the bark into the tapestry of life within. Discover how his multisensory installations explore the concept of "umwelt," or the unique sensory...
SciShow
The Viruses That Changed Our World
While viruses can be deadly and completely wreak havoc on humanity, they can also sometimes change our world for the better. Join Hank Green for a new episode of SciShow and learn the truth about the viruses that have shaped humanity...
SciShow
Now We Can Turn Your Thoughts Into Reality
How is it that you can be looking at a distinct object in front of you, yet picture something entirely different in your mind? The inner workings of what’s happening in our brains to allow this is a puzzle that scientists are now...
SciShow
Why Protons Are Still Such a Mystery to Scientists
Protons make up most of the regular matter int he universe, but we're still figuring out a few of their quirks... Or quarks. Join Hank Green and learn why protons are still so mysterious to scientists, and what we've discovered about...
Crash Course
Broadway, Seriously: Crash Course Theater #46
We're going to Broadway, everybody, and it's not going to be that fun. In fact, it's going to be a very serious experience with lots of powerful social commentary and indictments of life in America in the 1950s. So be prepared to look at...
PBS
Why Flint Residents Are Still Dealing With Water Worries, 5 Years After Lead Crisis
Since 2014, Flint, Michigan, has been synonymous with tainted water. Five years on, not all of the city's residents have access to safe water. Some wait for hours in line to obtain bottled water, while others deal with the physical and...
PBS
Filling In This Perception Gap Can Help Low-Income Students Succeed
For many students at LaGuardia Community College in New York, making it from the first day of school to graduation is a struggle. And they're not alone. Part of this national problem? We don't have a good idea of who's going to college,...
PBS
Murder, extortion and corruption in Acapulco
2017 marked Acapulco's fifth straight year of being Mexico's most murderous
city. Once an internationally renowned tropical paradise, violence has shot
up over the last decade. But while police and military forces protect
tourists,...
PBS
Summer Reading Lists For Young People At A Time Of Crisis
Amid dual national crises of a pandemic and outrage over racism and police brutality, books provide opportunities both to learn more and to find distraction from reality. Jeffrey Brown talks to writer Jason Reynolds, the Library of...
PBS
Your phone is trying to control your life
Whether you're killing time in line at Starbucks or scrolling through an endless meme stream on Twitter, your smartphone is trying to seduce you. Former Google employee Tristan Harris felt something needed to be done to combat tech...
PBS
Your phone is trying to control your life
Whether you're killing time in line at Starbucks or scrolling through an endless meme stream on Twitter, your smartphone is trying to seduce you. Former Google employee Tristan Harris felt something needed to be done to combat tech...