Hank talks about a sweet-tasting substance we humans just love - where it comes from, why we need it and how we could maybe stand to love it a little less.

Can't remember where your soup spoon ought to go? What about your salad fork? Knowing how to set a traditional table can seem like antiquated etiquette -- but it can come in handy! Anna Post, great-great-granddaughter of etiquette expert...

Some of the animals you think of as just cute grass-eating creatures might actually be more interested in chomping on your meaty bones.

Mirror neurons are a very cool part of our brains but some people are taking it way further by making claims that they are responsible for telepathy and ESP. It goes without saying that this isn’t true, but what exactly do mirror neurons...

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?

This week on SciShow News, scientists found that social interaction triggers the production of the “bliss molecule” in mice. Plus, eating sugar is about more than just the calories.

Paul Andersen explains how plants use hormones to respond to their environment. The following hormones are detailed; auxin, cytokinins, gibberelins, abscisic acid and ethylene.

The name of the order Carnivora means "meat-eaters," and while most of the members of Carnivora live up to that name, there is at least one cute and curious exception.

Join SciShow News as we explore why eating placenta doesn't actually do very much. Injecting wastewater into the ground, on the other hand, seems to do quite a bit.

Hank's love affair with plants takes a slight hit now that he's learned about several animal species that can photosynthesize. Fortunately, he's excited enough about these animals to share them with all of us! Let SciShow introduce you...

The species of slug known as Elysia chlorotica may not look like much— it resembles a bright green leaf— but it's one of the most extraordinary creatures on our planet. Living in marshes along the coast of North America, it can go about...

Ever since humans found out about germs, we’ve gone a bit overboard inventing antibacterial soap and antibiotics and antifungals. But despite our aversion to them, microbes aren’t all bad, and some of them could even help us...

It's Okay to Be Smart: Is Sugar A Drug?

The keto diet is a high fat, low carb diet that proponents say is not just great for losing weight, but is good for your brain health, too. Does the science behind the diet back those claims up? We delve into the origin of the keto diet...

Evolution doesn't care about ethics - it cares about surviving and getting your alleles out there as much as possible. From that perspective, cannibalism can seem like a pretty good idea to some creatures. Hank introduces us to three...

Welcome to Crash Course Kids. In this first episode, Sabrina takes a look at why all living things need to eat. Plus, she shows you a way to investigate why all living things need to eat. This first series is based on 5th grade science....

Tribology: it's a funny-sounding word you might not have heard before, but it could change how you see and interact with the physical world, says mechanical engineer Jennifer Vail. Offering lessons from tribology -- the study of friction...

A Quick Question answer that explains the chemistry that makes minty things taste “cool” and spicy things taste “hot”.

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.

No matter how full you are, it seems you can find room for dessert. It’s not your imagination, and once you understand why, you’ll see how you can use this weird quirk of your appetite to your advantage!

Hank describes how our brains respond biochemically to various addictive substances and behaviors and where those responses have come from, evolutionarily speaking.

You know what starvation is, but do you know what it does to you? Hank walks you through the three major metabolic phases of starvation, from burning sugars to, basically, self-cannibalism.

Hank talks about the issues of rising global population.

Why do dogs eat grass? A look at your pup’s wild relatives may give you a sense of what dogs’ diets are really like.