PBS
Why Do You Remember The Past But Not The Future?
The laws of physics don’t specify an arrow of time - they don’t distinguish the past from the future. The equations we use to describe how things evolve forward in time also perfectly describe their evolution backwards in time. So the...
PBS
Does Life Need a Multiverse to Exist?
Life exists in our universe. There we go - one hopefully uncontroversial statement. Therefore our universe is capable of producing and supporting life. How am I going? Two for two? Let’s try for three: therefore there are countless...
PBS
The NEW SCIENCE of Moon Formation
Einstein once asked whether “the moon exists only when I look at it?". It was rhetorical objection to the idea that measurement in quantum mechanics causes reality to become real. But there was a time when the moon didn’t exist, and then...
PBS
How Black Holes Kill Galaxies
Black holes are really only dangerous if you get too close. Ha, who am I kidding. It turns out they may be responsible for ending star formation across the entire universe. When we first realized that black holes could have masses of...
PBS
That Time the American West Blew Up
How is it possible to have cataclysmic eruptions without any real cataclysm?
PBS
The Real Story Of The Dodo Bird's (Current) Extinction
What’s the real story of the dodo? How did such a unique bird even evolve in the first place? And are we really responsible for its extinction?
PBS
Where Did Water Come From?
Mercury, Venus, and Mars are all super low on water – so where did ours come from and why do we have so much of it? We think our water came from a few unlikely sources: meteorites, space dust, and even the sun.
PBS
How Volcanoes Froze the Earth (Twice)
Over 600 million years ago, sheets of ice coated our planet on both land and sea. How did this happen? And most importantly for us, why did the planet eventually thaw again? The evidence for Snowball Earth is written on every continent...
TED-Ed
TED-Ed: Which is better for you: "Real" meat or "fake" meat? | Carolyn Beans
In 2021, a survey of over 1,000 Americans found that nearly two-thirds had eaten plant-based meat alternatives in the past year. Many cited potential health and environmental benefits as their motivation. But are these alternative meats...
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: Why did Megalodon go extinct? | Jack Cooper and Catalina Pimiento
20 million years ago, the ocean housed a creature so colossal that its stomach could reach volumes of almost 10,000 liters— big enough to fit an entire orca. It was the megalodon, the biggest shark to ever live. So, what was it like when...
TED-Ed
TED-Ed: Why is this black square famous? | Allison Leigh
In 1915, an exhibition of radical artworks opened in Russia. Many pieces pushed the boundaries of form and style, but one was particularly controversial: Kazimir Malevich's "Black Square." Criticized as simple and uninspired, Malevich's...
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,...
SciShow
Why Aliens Might Love Their Frozen Home
In the hunt for life beyond Earth, scientists shouldn't skip over frozen planets. In some cases, ice might actually help life evolve!
SciShow
Most Planets Don't Orbit Stars!?
Hunting for rogue planets is like hunting for an invisible needle in a haystack. But we're getting a much clearer view thanks to gravitational microlensing surveys. And it looks like there are a LOT more of them out there than we thought.
SciShow
Why Are Champagne Bubbles So Tidy?
Have you ever noticed that the bubbles in your glass of Champagne are just.... fancier than other sparkling drinks? They form those lovely little columns of bubbles in a way that nothing else does - and it turns out there's some neat...
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.
SciShow
We Solved the Mystery of the Dying Birds
Across the southeastern United States, bald eagles have been dying unexplainedly for the past 25 years. In March of 2021, researchers announced that they had found the killer, and they hope we can use this knowledge to better protect...
SciShow
How Do Oysters Make Pearls?
Quick Questions gives you the low-down on how oysters turn a tiny bit of gunk into a lovely, valuable pearl. ----------
SciShow
What are Blood Types?
Quick Questions explains why, when it comes right down to it, there are really only eight kinds of people in the world.
SciShow
The "Disease" That Struck Medieval Church Organs
During long, cold winters in medieval Europe, church organs grew gray, sickly-looking circles that spread over their pipes. People back then believed that this was the work of the devil, but as it turns out, it’s just some pretty simple...
SciShow
SPNs Might Change the World, So What Are They?
The first 100 people to use the code SCISHOW10 will receive 10% off their first purchase! This code is valid through the end of the year. Head to https://gift.climeworks.com/scishow to give the gift of CO₂ removal this holiday season....
SciShow
Meet CERN's New Particle: A Double-Charm Baryon!
This week, CERN announced a new particle that will help further understanding of the fundamental forces, and a simulation of ancient creatures may give us a clue as to how life grew beyond the microscopic.
SciShow
How Do You Make Memories?
What if you couldn’t remember anything past 30 seconds? Let us introduce you to a man named Henry Molaison who was diagnosed with anterograde amnesia. He couldn’t form new memories.