So when water evaporates, what happens? Where does that water go? Does just vanish? Is it no more? Can matter every just go away? Well, the answer is no, it can't. But it can LOOK like it does. In this episode of Crash Course Kids,...

Can you melt wood? Most of the time, the answer is no. But as with many things in science, under the right circumstances, it might just be possible.

Are you old enough for your childhood to be filled with the threat of acid rain? Are you now thinking "Wait, why haven't I heard about the threat of acid rain in forever?". Well it's because scientists and policymakers around the...

You may have seen some unpronounceable words or weird abbreviations in your food's ingredient lists before, but have you ever wondered why that stuff gets added into your snacks? It's not just for fun, those preservatives are all there...

Low-E windows have reduced the amount of energy required to heat and cool our buildings, a critical step in fighting climate change. But new research suggests we've lost something beneficial in the process.



Hosted by: Hank...

Arrokoth, an asteroid in the Kuiper Belt, is the most distant object ever explored by the New Horizons spacecraft. And it's covered in sugar. Here's why that might be important for understanding the nature of life...

Dry cleaning has gone from kerosine to perc to wet cleaning in an attempt to make it less ...deadly. Over the years, dry cleaning has evolved to address the dangers of flammability, interactions with your lungs, and environmental harm,...

Despite the diverse appearance and characteristics of organisms on Earth, the chemicals that make up living things are remarkably similar, often identical. In this episode of Crash Course Biology, we’ll look at the building blocks of the...

Humans may have been around for a long time, but life has existed for way longer. In this episode of Crash Course Biology, we’ll journey through deep time to uncover the history of life on Earth. We’ll explore the big, game-changing...

In this quantum world, what does it mean to touch something? Do we really hover above the chairs we're sitting in?

Humans can go inside or put on clothes, but trees spend winter naked in the cold. Why don't they all die?

How Do Greenhouse Gases Actually Work?

How Do Airplanes Fly?

Do We Expand With The Universe

Still wondering why leaves are green and not purple or even black? CHLOROPHYLL! It's how leaves work.

Concrete doesn't dry - it sets!

Want to learn more about the topic in this week's video? Here are some key words/phrases to get your googling started: - Lifting Condensation Level (LCL): The altitude at which the water vapor in rising air begins to condense - Adiabatic...

There are several ways the world could end, and scientists have given a lot of thought to what the last living thing will be.

When you think of newer ways to make electricity, solar cells and wind turbines may come to mind. But scientists can make the stuff from just about anything. And they're working on some truly bizarre ways to generate power.

About 99.9% of your typical human body is made of just 11 elements from the periodic table. But hiding in that remaining 0.1% are some elements that do some very important jobs to keep you alive and healthy. Including some elements you...

Have you ever wondered why 75% humidity in the summer feels sticky, but 75% humidity in the winter feels super dry? Turns out, the common definition of humidity is inconvenient and confusing. But there is a better way!

Can humans really feel temperature?

Vaccines for covid or the flu teach your immune system to remember a threat so that it responds when that threat shows up. Some researchers want to delete immune memories instead, because those aberrant memories are the cause of...

Hearing the word "superacid" may evoke memories of that scene from Breaking Bad, but perhaps counterintuitively, the strongest acid on Earth wouldn't be able to destroy your bathroom.