PBS
Venus May Have Life!
If you rank the most habitable places in our solar system Venus lands pretty low, with surface temperatures hot enough to melt lead and sulphuric acid rain. And yet it may have just jumped to the front of the pack. In fact, we may have...
PBS
How Vacuum Decay Would Destroy The Universe
The universe is going to end. But of all the possible ends of the universe vacuum decay would have to be the most thorough - because it could totally rewrite the laws of physics. Today I hope to help you understand exactly how terrified...
PBS
Science of the James Webb Telescope Explained!
You’ve probably heard about the James Webb Space Telescope and seen some cool pictures. But why should astronomers have all the fun? How do we get to use this new toy ourselves?
PBS
Could The Universe Be Inside A Black Hole?
What is inside a black hole? Inevitable crushing doom? Gateways to other universes? Weird, multidimensional libraries? If you’ve ever wanted to know then you might be in luck - Some physicists have argued that you’re inside one right now.
PBS
How An Extreme New Star Could Change All Cosmology
A new white dwarf has been discovered (poetically named: ZTF J1901+1458) that’s doing some stuff that no white dwarf should ever be able to do. In fact, it has multiple properties that are so extreme that it almost certainly did NOT form...
PBS
What Happens Inside a Proton?
If we ever want to simulate a universe, we should probably learn to simulate even a single atomic nucleus. But it’s taken some of the most incredible ingenuity of the past half-century to figure out how that out. All so that today I can...
PBS
What Happens After the Universe Ends?
Conformal Cyclic Cosmology is a story of the origin and the end of our universe from great mathematical physicist Sir Roger Penrose. It’s goes like this: the infinitely far future, when the universe has expanded exponentially to to an...
PBS
What Caused the Big Bang?
Every astronomy textbook tells us that soon after the Big Bang, there was a period of exponentially accelerating expansion called cosmic inflation. In a tiny fraction of a second, inflationary expansion multiplied the size of the...
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
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
A Natural History of Mars
While Earth’s natural history has been playing out over the last few billion years, another epic planetary saga has also been unfolding right next door.
TED-Ed
TED-Ed: Whoever builds something here will be rich beyond measure | Fabio Pacucci
Since the 1950s, governments, companies, and researchers have been planting flags among the stars. But while it might seem like there's plenty of room in space, some pieces of celestial real estate are more valuable than others. As far...
TED-Ed
TED-Ed: Why is it so hard to break a bad habit? | TED-Ed
Many people deal with a nail-biting habit at some point in their lives. Some will go to great lengths to try to stop, employing strategies like dipping their hands in salt or wearing gloves. And while not all of us are nail-biters, most...
TED-Ed
TED-Ed: Can you solve the time traveling car riddle? | Daniel Finkel
You and the professor have driven your DeLorean back to the past to fix issues with the spacetime continuum caused by your time traveling. But another DeLorean appears with older versions of you and the professor. The professors panic...
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...
TED Talks
TED: Will superintelligent AI end the world? | Eliezer Yudkowsky
Decision theorist Eliezer Yudkowsky has a simple message: superintelligent AI could probably kill us all. So the question becomes: Is it possible to build powerful artificial minds that are obedient, even benevolent? In a fiery talk,...
SciShow
Is Mifepristone Safer Than Viagra? Yes*
Mifepristone, a drug used for medical abortions, is under fire in the United States, with critics claiming it isn't safe to use. Abortion rights advocates often revert to a funny talking point to argue for its safety, but how accurate is...
SciShow
Why You Have to Blink to Walk
When we picture the first tetrapods, or land vertebrates, crawling out of the ocean, we probably imagine they need legs. But evolution also had to bestow another important adaptation before they could leave the water: blinking!
SciShow
Burn Your Waste With... Water?
Supercritical water produces fire without flames, which is great for making clean drinking water from our waste in space or breaking down forever chemicals here on Earth.
MinutePhysics
The Rocket & String Paradox
This video is about Bell's Spaceship Paradox of Special Relativity, wherein a pair of rockets (or spacecraft) connected by a weak thread accelerate with uniform acceleration, maintaining the same separation, and the question is: does the...
MinutePhysics
The Problem With The Butterfly Effect
One Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in one minute!
MinutePhysics
Is Anything on the Internet Real?
One Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in one minute!
MinuteEarth
What Happens When A Volcano Meets a Glacier?
Volcanoes might seem like an unstoppable force of nature - but there is at least one OTHER force on Earth that seems to be able to keep them down.
MinutePhysics
Another Portal Paradox
What happens if you extend a piston through a portal? Or try to sandwich a cube between two portals? That's right, it's time to explore more portal paradoxes!