As earth temperatures continue to rise, what's really to blame?

Some people take aspirin or ibuprofen to treat everyday aches and pains, but how exactly do the different classes of pain relievers work? Learn about the basic physiology of how humans experience pain, and the mechanics of the medicines...

What would happen if we could generate power from our windowpanes? In this moving talk, entrepreneur Justin Hall-Tipping shows the materials that could make that possible, and how questioning our notion of 'normal' can lead to...

What was once thought to be a black hole might in fact be a star that feeds on its own kind!

Featuring Katherine Green, Content and Social Media Manager for SciShow and also Hank's wife, and Quigley, the brush-tailed bettong or woylie.

Is there a definitive line that divides crazy from sane? With a hair-raising delivery, Jon Ronson, author of The Psychopath Test, illuminates the gray areas between the two. (With live-mixed sound by Julian Treasure and animation by Evan...

The amount of metal some special plants are able to take up from the soil would be toxic enough to an average plant to kill it several times over.

Depression is the leading cause of disability in the world; in the United States, close to ten percent of adults struggle with the disease. But because it's a mental illness, it can be a lot harder to understand than, say, high...

Why can you usually stay healthy while you’re going through a stressful situation, but then you get sick right after?

Reuse of syringes, all too common in under-funded clinics, kills 1.3 million each year. Marc Koska clues us in to this devastating global problem with facts, photos and hidden-camera footage. He shares his solution: a low-cost syringe...

Did you know that last year we had 28 of the fastest days ever recorded? Earth's rotation can be affected by a number of things, and scientists think we might someday need an unprecedented adjustment: deleting a second!

Psychologist Susan David shares how the way we deal with our emotions shapes everything that matters: our actions, careers, relationships, health and happiness. In this deeply moving, humorous and potentially life-changing talk, she...

When a baby is born, so is a mother -- but the natural (and sometimes unsteady) process of transition to motherhood is often silenced by shame or misdiagnosed as postpartum depression. In this quick, informative talk, reproductive...

Babies cry a lot, but some babies cry a lot more than others. These babies are said to have colic - and doctors aren’t totally sure what causes it.

Fun Fact: people can donate over half of their liver, and the tissue will grow back within a year! Knowing that, it seems pretty logical to assume that we could just keep donating and regrowing our livers over and over again, but is that...

Sometimes, studying uncommon maladies can reveal larger insights into how our bodies work!<br/>
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Scientists have developed a way to grow miniature versions of human organs; some of the weirdest organoids are the mini brains.

Carbon dating is a lot more than just getting the age of a dinosaur bone. We can learn a lot about the world through its use, and it turns out, we have.

Have you had a normal menstrual cycle and then you suddenly miss a period? There are different reasons why this can happen, and if you don't experience a period you were expecting, you’ll probably want to talk to your health care...

Ever heard of Oobleck? How about Non-Newtonian fluids? Well, today Sabrina is going to show us that things can sometimes behave like a solid, and sometimes like a liquid depending on how much force is applied to them. In this episode of...

Love SciShow? Help support us by getting things to put on your walls, cover your torso, or hold your liquids!

The sequence of DNA that we inherit from our parents encodes directions for making our cells and giving us specific traits. Identical twins have the same DNA sequence, so how can one twin end up with a genetic disorder while the other...

Hank acknowledges the amazing feat performed by Felix Baumgartner and answers many of your questions about why it is so amazing.

The word "normal" is often used as a synonym for "typical," "expected," or even "correct." By that logic, most people should fit the description of normal. But time and time again, so-called normal descriptions of our bodies, minds, and...