SciShow
Can Vitamin C and Zinc Help Cure Colds?
You’ve probably heard that taking vitamin C or zinc will keep you from getting sick, but it turns out that those popular cure-alls don't actually work.
Crash Course
Cycles in the Sky
This week we build on our naked eye observations from last week and take a look at the cyclical phenomena that we can see at work in the universe.
SciShow
How Stereotypes Affect Your Test Scores
It turns out stereotypes can affect you-whether you believe in them or not.
SciShow
Why You Think You Look Better in Selfies
You might have had the experience of heading out for the night, feeling good, snapping a few selfies with friends that memorialize for all time how great your hair is looking. But the next day, you’re tagged in someone else’s photos and…...
SciShow
Here’s When You Should Trust Your Gut
Trusting your gut may not sound like a reliable way to make decisions, but the research points to some times when you might want to listen to it!
Crash Course
Special Effects: Crash Course Film Production
Chances are, when you hear the phrase "Special Effects," you may have images pop into your mind. The Hulk smashing a city, a lightsaber fight, or maybe an alien world. But effects can be much more subtle and have been around really since...
TED-Ed
TED-Ed: Can loud music damage your hearing? | Heather Malyuk
After a concert, you find it difficult to hear your friend rave about the show. It sounds like they're speaking from across the room, and it's tough to make out their voice over the ringing in your ears. But, by the next morning, the...
SciShow
Strong Interaction: The Four Fundamental Forces of Physics #1a
Part one of a four part series on the fundamental forces (or interactions) of physics begins with the strong force or strong interaction - which on the small scale holds quarks together to form protons, neutrons and other hadron particles.
TED-Ed
TED-ED: Do we really need pesticides? - Fernan Perez-Galvez
Annually, we shower over 5 billion pounds of pesticides across the Earth to control insects, unwanted weeds, funguses, rodents, and bacteria that may threaten our food supply. But is it worth it, knowing what we do about the associated...
SciShow
Why Does a Word Sometimes Lose All Meaning?
You may have experienced this before: When you repeat the same word over and over and over and over and over and over and over and over and over and over and over and over, the words suddenly sound foreign and lose all meaning, but why?
TED-Ed
TED-Ed: How to spot a fad diet - Mia Nacamulli
Conventional wisdom about diets, including government health recommendations, seems to change all the time. And yet ads routinely come out claiming to have THE answer about what we should eat. So how do we distinguish what's actually...
SciShow
Does Hot Water Freeze Faster Than Cold Water?
Does hot water freeze faster than cold water? Turns out, the answer to this question is a lot trickier than it seems!
TED-Ed
TED-ED: The mathematics of sidewalk illusions - Fumiko Futamura
Have you ever come across an oddly stretched image on the sidewalk, only to find that it looks remarkably realistic if you stand in exactly the right spot? These sidewalk illusions employ a technique called anamorphosis - a special case...
TED-Ed
TED-Ed: Which is better: Soap or sanitizer?
Your hands, up close, are anything but smooth. With peaks and valleys, folds and rifts, there are plenty of hiding places for a virus to stick. If you then touch your face, the virus can infect you. But there are two extraordinarily...
SciShow
Is the Bystander Effect Real?
How much does the presence of other people affect our willingness to step in when someone needs help?
TED-Ed
How do you know what's true? | Sheila Marie Orfano
A samurai is found dead in a quiet bamboo grove. One by one, the crime's only known witnesses recount their version of the events. But as they each tell their tale, it becomes clear that every testimony is plausible yet different. And...
SciShow
Why Are Flamingos Pink?
What makes flamingos go from grey to pink? And can the same thing happen in humans? Quick Questions explains!
TED-Ed
TED-Ed: How puberty changes your brain | Shannon Odell
While we often talk about puberty's effect on the body, what gets overlooked are the fascinating changes that happen in the brain. Puberty, in fact, begins in the brain, and lasts as long as five years. And during this extended process,...
Crash Course Kids
Over (to) The Moon
Sabrina gets a new set in this episode of Crash Course Kids. Do you want to be an astronaut? Would you like to someday walk on the moon? Well, you better learn a little about gravity so you can escape from Earth and head into space....
Crash Course
Fitting Models Is like Tetris - Crash Course Statistics
Today we're going to wrap up our discussion of General Linear Models (or GLMs) by taking a closer looking at two final common models: ANCOVA (Analysis of Covariance) and RMA (Repeated Measures ANOVA). We'll show you how additional...
MinutePhysics
Correlation CAN Imply Causation! | Statistics Misconceptions
This video is about how causal models (which use causal networks) allow us to infer causation from correlation, proving the common refrain not entirely accurate: statistics CAN be used to prove causality! Including: Reichenbach's...
Be Smart
Is Inheritance Really All In Our Genes?
Epigenetic inheritance is really weird, but is it real?
TED Talks
TED: Could a drug prevent depression and PTSD? | Rebecca Brachman
The path to better medicine is paved with accidental yet revolutionary discoveries. In this well-told tale of how science happens, neuroscientist Rebecca Brachman shares news of a serendipitous breakthrough treatment that may prevent...
TED-Ed
TED-ED: How to use rhetoric to get what you want - Camille A. Langston
How do you get what you want, using just your words? Aristotle set out to answer exactly that question over two thousand years ago with a treatise on rhetoric. Camille A. Langston describes the fundamentals of deliberative rhetoric and...