Voyager 1 may be out of our solar system (and 40+ years old) but we're still getting plenty of new data from our interstellar space probe.

Plants can get sick, but since they don’t walk around sneezing on each other, the things that infect them need some very weird strategies to spread.

Many studies have shown that pets can relieve anxiety, stress, and provide comfort, but why pet therapy is effective has a lot more to do with us than our furry pals.

In this video Paul Andersen explains the importance of standard deviation. He starts with a discussion of normal distribution and how the standard deviation measures the average distance from the mean, or the "spread" of data. He then...

Today we’re looking at silicon, and how introducing small amounts of other elements allow silicon layers to conduct currents, turning them into semiconductors. We’ll explore how putting two different types – N and P semiconductors –...

Modern computers are revolutionizing our lives, performing tasks unimaginable only decades ago. This was made possible by a long series of innovations, but there's one foundational invention that almost everything else relies upon: the...

What's something that's neither vegetable or meat, digests food on the outside of its body, glows and the dark, and can go on top of your pizza? The amazing mushroom!

In this video Paul Andersen explains the basics of solid waste including trends over time, basic composition, and disposal. A brief description of the three R's (reuse, reduce, and recycle) is included as ways to minimize waste. ...

Join Hank Green to learn ten weird, scary, and amazing things fungi can do!

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Quick Questions explains why, when it comes right down to it, there are really only eight kinds of people in the world.

Learn how scientists are fighting cancer... with algae!

Hospitals have all sorts of amazing tools, and some might even have a particle accelerator hiding somewhere in the basement.

What's in macaroni salad? Break down the pasta, mayonnaise, vinegar, mustard, vegetables, etc., and you're left with a bunch of molecules. Josh Kurz uses a delicious recipe to exemplify three types of mixtures (solution, colloid and...

Earth is not flat. So, representing it on a flat surface can be challenging and always requires compromises.

Different fuels create different types of fires, and each one needs to be extinguished using a specific strategy. Do you know which class of extinguisher is needed for different fires?

Have you ever taken a bite from a bright red apple and wondered why it looks red to you? Jessi and Squeaks talk about how our eyes and brains help us see color!

Almost everyone has a scar that tells a story, but have you ever wondered why exactly scars form in the first place?

Each father and mother pass down traits to their children, who inherit combinations of their dominant or recessive alleles. But how do we know so much about genetics today? Hortensia Jimenez Diaz explains how studying pea plants revealed...

Have you ever seen a weather report on TV and wondered how they can tell when it's going to rain days before it happens? Well, there are special scientists called meteorologists who use all kinds of cool equipment to predict the weather!

Many generations have felt they've reached the pinnacle of technological advancement. Yet, if you look back 100 years, the technologies we take for granted today would seem like impossible magic. So - will there be a point where we reach...

In this video Paul Andersen explains how at the smallest level all matter is made of fundamental particles; including quarks, electron, photons and neutrinos. He explains how understanding the properties of these particles allows us to...

Do you just hate those little bumps all over your nose? Don't be a hater, they're just doing their job! Learn how in this SciShow Quick Question.

The hair on your scalp can get really long, but your leg hair doesn't sweep the floor. Why not?

Orcas are some of the most effective predators in the ocean, and each population of them has entirely different prey preferences and hunting techniques, more than earning their nickname “killer whale!” Chapters 1 MAKING WAVES 2:12...