Why do exams always tell you to use a number 2 pencil? What happens if you don’t? Quick Questions explains!

Table saws, while quite useful for woodworking, are also dangerous machines, which is why some incredible safety mechanisms have been invented to help you remain one with your body parts. Hosted by: Stefan Chin

We know these glaciers are already on the way out, so we need to find out whether we can bulk them back up again. For that, we turn to the glaciers’ past – and a lot of penguin bones.

This week in the journal Nature Communications, scientists report a way to use fossilized shark teeth to figure out where different shark species, including megalodon, stood in the web of life. And last week in the journal Scientific...

Nadine the robot has been unveiled, and as robotics technology gets more advanced, humanoid robots are looking more and more human. In this episode of SciShow News we explore how Nadine works and why a lot of people find it creepy.

Welcome to the romantic, violent, treacherous, and murderous mating lives of bugs.

We've found a microbe that might someday protect us from malaria parasites, and bees might have help with their jobs soon, thanks to bubble pollination!

Without refrigerators, we'd have spoiled milk, moldy cheese, and warm sodas. However, there are some foods that don't fare so well in a chilly fridge, including tomatoes. Hosted by: Olivia Gordon

The size, shape, and designs of the balls used in sports are usually the results of decades or even centuries of trial and error, and the cute, dimply li'l golf ball is no different!

About 10% of the world population is left-handed. But why does handedness exist and what determines which hand is dominant? Scientists have suggested several theories, but the answer may well lie with evolution.

In this poetic and moving reflection, actor, musician and activist Golshifteh Farahani honors those who have fought for "Woman, Life, Freedom" following Mahsa Amini's death at the hands of Iran's religious morality police. Calling upon...

Are the five senses really all that we use to take in the world around us, or is it a little more complex than that, with psychology playing a more prominent role than you might have thought?

A few years ago, the king decided your life would be forfeit unless you tripled the gold coins in his treasury. Fortunately, a strange little man appeared and magically performed the feat. Unfortunately, you promised him your first-born...

The formula for the cross product can feel like a mystery, or some kind of crazy coincidence. But it isn't. There is a fundamental connection between the cross product and determinants.

What exactly is Consciousness? Well... that's kind of a gray area. In this episode of Crash Course Psychology, Hank gives you the basic ideas of what Consciousness is, how our attention works, and why we shouldn't text and...

Is art worth it? "Hell yeah," says graphic novelist R. Alan Brooks -- art has the power to scare dictators, inspire multitudes and change hearts and minds across the world. Reflecting on his journey to become an artist at a time when the...

The post-World War II decades in Europe are sometimes called the Thirty Glorious Years. As those years wore on, tensions between East and West grew, and economic growth slowed or was unevenly distributed across Europe, protests and...

In this video Paul Andersen shows conceptual thinking in a mini-lesson on structure and function.


TERMS
Structure - parts in a mater
ial object
Function - an activity or purp
ose for a thing
Shape - extern
al form of...

In this episode of Crash Course Psychology, Hank takes a look at WAIS and WISC intelligence tests and how bias can really skew both results and the usefulness of those results.
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Today, about one-tenth of the world's population are southpaws. Why are such a small proportion of people left-handed -- and why does the trait exist in the first place? Daniel M. Abrams investigates how the uneven ratio of lefties and...

Since 1850, global average temperatures have risen by 1 degree Celsius. That may not sound like a lot, but it is. Why? 1 degree is an average. Many places have already gotten much warmer and if average temperatures increase one more...

Hank explores different ways of understanding identity – including the Indiscernibility of Identicals, and essential and accidental properties. In what ways does affect identity? In what ways does it not? What does it mean for a thing to...

The oceans absorb a lot of CO2, leading to a variety of effects like ocean acidification. But you might not expect one of those effects: stronger lightning strikes.

The formula for the cross product can feel like a mystery, or some kind of crazy coincidence. But it isn't. There is a fundamental connection between the cross product and determinants.