SciShow
Anxiety Hurts
Everybody knows what anxiety feels like - it's annoying and counterproductive and apparently useless, so why does it exist? It turns out your anxiety isn't useless at all - it's a result of the sympathetic nervous system (in charge of...
TED Talks
TED: 3 questions to build resilience -- and change the world | Sister True Dedication
Every moment of movement is a chance to become more aware of yourself and the world around you, says Zen Buddhist nun Sister True Dedication. Guiding us through the art of "mindful walking," she shares three essential questions to ask...
TED-Ed
TED-ED: The genius of Marie Curie - Shohini Ghose
Marie Sk_odowska Curie's revolutionary research laid the groundwork for our understanding of physics and chemistry, blazing trails in oncology, technology, medicine, and nuclear physics, to name a few. But what did she actually do?...
MinuteEarth
Why We Faint (When Other Animals Don't)
Humans are the only animals known to faint due to triggers like shock, fear, or pain; this is due to a combination of our massive brains and upright stance.
TED Talks
TED: Why it's too hard to start a business in Africa -- and how to change it | Magatte Wade
Many African countries are poor for a simple reason, says entrepreneur Magatte Wade: governments have created far too many obstacles to starting and running a business. In this passionate talk, Wade breaks down the challenges of doing...
SciShow
Why Do Heart Cells Turn into Bone?
It's no surprise that heart tissue and bone tissue have really different jobs. So why does it happen?
SciShow
Why Crocodiles Have an Extra Hole in their Heart
Crocodiles have four-chambered hearts, just like we do! But, while our hearts do just fine with four valves, they have a slightly different approach…
Be Smart
How Many Heartbeats Do We Get?
Ever wonder how the heart symbol came to stand for the actual heart? And why do we speak of the heart as the seat of love, when love really happens in our brains? Is it true that animals only get a billion heartbeats? This week, we give...
TED-Ed
TED-ED: How aspirin was discovered - Krishna Sudhir
4000 years ago, the ancient Sumerians made a surprising discovery: if they scraped the bark off a particular kind of tree and ate it, their pain disappeared. Little did they know that what they'd found was destined to influence the...
SciShow
Nitroglycerin: Explosive Heart Medication
Imagine a substance so powerful that it could blow you to bits or save your life depending on how you used it. Well imagine no more: such a substance exists and you've probably heard of it.
SciShow
Why Don't Spaceships Have Artificial Gravity?
We've seen this done in movies right? Well, why don't spaceships have this technology?
Crash Course
Blood Vessels, part 2: Crash Course A&P
And now we return to blood vessels. In this episode, we start discussing what blood pressure is, how it can become "high", and what that means for our health. One of the more interesting points is that your body has ways of dealing with...
SciShow
Why Is Salt So Bad for You, Anyway?
You've probably been told that eating too much salt is bad for you, especially if you have high blood pressure. But what exactly does salt do to our bodies that can make it so hard on our hearts?
TED Talks
Werner Reich: How the magic of kindness helped me survive the Holocaust
Holocaust survivor Werner Reich recounts his harrowing adolescence as a prisoner transported between concentration camps -- and shares how a small, kind act can inspire a lifetime of compassion. "If you ever know somebody who needs help,...
TED Talks
Kelly McGonigal: How to make stress your friend
Stress. It makes your heart pound, your breathing quicken and your forehead sweat. But while stress has been made into a public health enemy, new research suggests that stress may only be bad for you if you believe that to be the case....
SciShow
Can You Really Be Scared to Death?
Can you literally "die of fright?" Turns out, you can! In this episode of SciShow Hank explores the mechanisms in your body that activate when you get scared, and how they can sometimes get out of hand.
Be Smart
How Your Body Knows Left From Right
This is part 3 of 3 in my series about how our bodies evolved to look like they do.
TED Talks
Hetain Patel: Who am I? Think again
How do we decide who we are? Hetain Patel's surprising performance plays with identity, language and accent -- and challenges you to think deeper than surface appearances. A delightful meditation on self, with performer Yuyu Rau, and...
SciShow
The Science of Happiness!
Laughter, love, and happiness are some of the best aspects of being human, and we've looked into the science behind it more than a few times. Here are a few videos that we hope will make you happy!
SciShow
How Being Obsessed with Health Can Make You Unhealthy
Dieting and exercise can be good for you, but just because something’s healthy, that doesn't mean more is even healthier.
SciShow
Why Do I Feel Lightheaded When I Stand Up?
Have you ever stood up and felt a bit dizzy and lightheaded? Learn why it happens in this SciShow Quick Question!
SciShow
Can You Actually Die from a Broken Heart?
It turns out this common phrase might have more of a basis in truth than you thought!
SciShow
Where Does Love Come From
When it comes to love, we often talk about our hearts...but we should actually be talking about our brains!
TED Talks
TED: An intergalactic guide to using a defibrillator | Todd Scott
If Yoda goes into cardiac arrest, will you know what to do? Artist and first-aid enthusiast Todd Scott breaks down what you need to know about using an automated external defibrillator, or AeD -- in this galaxy and ones that are far, far...